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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指数函数
A function of the form f(x) = a·bˣ, where the variable is in the exponent.
Population growth can be modelled by an exponential function.
人口增长可以用指数函数建模。指数增长
Increase by the same percentage over equal time periods.
The bacteria show exponential growth, doubling every hour.
细菌呈指数增长，每小时翻一番。expression
noun式
In maths, a combination of numbers, variables and operations without an equals sign.
Simplify the expression 2(x + 3) − x.
化简式子2(x + 3) − x。factor
noun因数
In maths, a number or expression that divides another exactly.
3 is a factor of 12.
3是12的因数。factorise
verb因式分解
To write an expression as a product of its factors (US: factor).
Factorise x² − 9 as (x − 3)(x + 3).
把x² − 9因式分解为(x − 3)(x + 3)。fashion
verb制作，塑造
In context: to make or shape something, especially by hand.
Early people fashioned tools from stone.
早期人类用石头制作工具。for example
phrase例如
A transition that introduces an example that supports the previous claim.
Many plants are poisonous. For example, oleander can harm pets.
许多植物有毒。例如，夹竹桃可能伤害宠物。for instance
phrase例如
A transition that introduces an example.
Some birds use tools; for instance, crows bend wire into hooks.
有些鸟会使用工具，例如乌鸦会把铁丝弯成钩子。
foster
verb促进，培养
To encourage something to develop.
The program fosters curiosity in young students.
该项目培养了低龄学生的好奇心。fraction
noun分数
A number that shows part of a whole, written as one number over another.
Write 0.6 as a fraction in simplest form.
把0.6写成最简分数。frequency
noun频数
In statistics, the number of times a value or category appears.
The frequency of the score 8 is 5.
分数8的频数是5。frequency table
noun频数表
A table that shows how often each value or category occurs.
Use the frequency table to find the median.
用频数表求中位数。function
noun函数
In maths, a rule that gives exactly one output for each input.
The function f(x) = 2x + 3 gives f(1) = 5.
函数f(x) = 2x + 3给出f(1) = 5。函数记号
Writing a function as f(x), which means the value of f at x.
In function notation, f(4) means the output when x is 4.
在函数记号中，f(4)表示x为4时的输出值。此外
Used to introduce additional supporting information
Furthermore, the data suggest a long-term effect.
此外，数据显示存在长期影响。galvanize
verb激励（行动）
To shock or inspire people into taking action (UK and Australia: galvanise).
The disaster galvanized volunteers across the country.
这场灾难激励了全国各地的志愿者行动起来。granted
adverb诚然
A transition that admits a point before arguing against it.
Granted, the sample was small, but the pattern was very clear.
诚然，样本很小，但规律非常明显。graph
noun / verb图像；画图像
A drawing that shows the relationship between values; to draw such a drawing.
The graph of the function is a parabola.
这个函数的图像是抛物线。grave
adjective严重的
In context: very serious and worrying.
The report raised grave concerns about water quality.
报告对水质提出了严重关切。growth factor
noun增长因子
The number b in an exponential model that each value is multiplied by, such as 1.05 for 5% growth.
A growth factor of 1.05 means a 5% increase each year.
增长因子1.05表示每年增长5%。harbor
verb心怀（情绪）
In context: to keep a feeling or thought in your mind for a long time (UK and Australia: harbour).
He harboured doubts about the plan.
他对这个计划心存疑虑。因此
For this reason; therefore (formal).
The road was flooded, hence the delay.
道路被淹了，因此耽误了。强调；亮点
To draw attention to something important; the best part of something.
The report highlights the need for more nurses.
报告强调需要更多护士。hinder
verb妨碍
To make it difficult for something to happen.
Lack of funding hindered the research.
资金不足阻碍了研究。histogram
noun直方图
A bar graph showing how many data values fall into each interval.
The histogram shows most students slept 7–8 hours.
直方图显示大多数学生睡了7到8小时。