SAT
数字化SAT学习词汇：数学术语、语境词汇和语法，用简明英语和8种语言解释。AUSLEX与College Board无关。
已审核词条
372 个词条先从数学英语术语开始：许多学生会做数学题，却因英文表述失分。语境词汇、语法规则卡和原创练习题正在陆续添加。SAT是College Board的商标，最新考试信息请查看官网。
数字化SAT一览
| 阅读与写作 | 54题，两个32分钟模块（共64分钟）；每题配一篇短文。 |
|---|---|
| 数学 | 44题，两个35分钟模块（共70分钟）；所有题目都可用计算器（内置Desmos）；部分题需自行填写答案。 |
| 总计 | 2小时14分钟，另有10分钟休息；每部分第二模块根据第一模块表现调整难度；总分400–1600。 |
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substantiate
verb证实
To provide evidence that something is true.
The author uses survey data to substantiate the claim.
作者用调查数据证实这一说法。substitute
verb代入
In maths, to replace a variable with a number or another expression.
Substitute x = 3 into the equation.
把x = 3代入方程。代入法
A way to solve a system of equations by solving one equation for a variable and substituting it into the other.
Use the substitution method to solve the system.
用代入法解方程组。金额，总数
An amount of money, or the total of numbers added together.
They paid a large sum for the house.
他们为这栋房子付了一大笔钱。summarize
verb总结
To give the main points briefly (UK and Australia: summarise).
The final sentence summarizes the study’s findings.
最后一句总结了研究结果。补角
Two angles that add up to 180 degrees.
110° and 70° are supplementary angles.
110°和70°互为补角。surface area
noun表面积
The total area of all the faces or surfaces of a 3D shape.
Find the surface area of the cube.
求正方体的表面积。sympathetic
adjective同情的，赞同的
Showing understanding and care for someone’s problems or views.
The author is sympathetic to the workers’ concerns.
作者对工人们的担忧表示同情。
方程组
Two or more equations with the same variables, solved together.
The system of equations has exactly one solution.
这个方程组恰有一个解。table of values
noun数值表
A table that lists input values and their matching output values.
Use the table of values to find the rule.
用数值表找出规律。tangent
noun正切
In trigonometry, the ratio of the opposite side to the adjacent side (tan).
tan x = opposite ÷ adjacent.
tan x = 对边 ÷ 邻边。tangent line
noun切线
A line that touches a circle at exactly one point.
A tangent line is perpendicular to the radius at the point of contact.
切线在切点处垂直于半径。temper
verb缓和
In context: to make something less strong or extreme; to moderate.
She tempered her criticism with praise.
她在批评中夹杂赞扬，以缓和语气。tentative
adjective暂定的，试探性的
Not certain or final; done with hesitation.
The researchers offer a tentative explanation.
研究人员提出了一个暂定的解释。term
noun项
In maths, a single number, variable, or numbers and variables multiplied together, separated by + or −.
The expression 3x + 2y − 5 has three terms.
式子3x + 2y − 5有三项。that is
phrase也就是说
A transition that explains or restates the previous idea more clearly.
The fossils are very old, that is, more than 100 million years.
这些化石非常古老，也就是说，超过一亿年。therefore
adverb因此
A transition that introduces a logical result or conclusion.
The soil lacked nitrogen. Therefore, the plants grew slowly.
土壤缺氮。因此，植物长得很慢。thus
adverb因此，这样
A transition meaning "as a result" or "in this way".
The river flooded the fields; thus, the harvest was lost.
河水淹没了田地，因此收成没了。to that end
phrase为此
A transition meaning "in order to achieve that goal".
The city wants cleaner air. To that end, it is expanding bike lanes.
市政府希望空气更清洁。为此，正在扩建自行车道。transformation
noun变换
In maths, a change to a graph, such as a shift, stretch or reflection.
The graph of y = f(x) + 3 is a transformation up 3 units.
y = f(x) + 3的图像是向上平移3个单位的变换。transversal
noun截线
A line that crosses two or more other lines.
A transversal crossing parallel lines makes equal corresponding angles.
截线穿过平行线时形成相等的同位角。trapezoid
noun梯形
A quadrilateral with one pair of parallel sides (UK and Australia: trapezium).
The area of a trapezoid uses the average of the parallel sides.
梯形面积用两条平行边的平均值计算。triangle
noun三角形
A shape with three sides and three angles; the angles add up to 180 degrees.
The angles of a triangle add up to 180°.
三角形的内角和是180°。trigonometry
noun三角学
The part of maths about the relationships between angles and sides of triangles.
SAT trigonometry questions often use right triangles.
SAT三角学题常用直角三角形。two-way table
noun双向表
A table that shows data for two categories at the same time.
The two-way table shows grade level and favourite sport.
双向表显示年级和喜欢的运动。