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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percent change
noun百分比变化
The change in a value divided by the original value, shown as a percentage.
Percent change = (new − original) ÷ original × 100.
百分比变化 = (新值 − 原值) ÷ 原值 × 100。percent decrease
noun百分比下降
The decrease in a value shown as a percentage of the original value.
A drop from $80 to $60 is a 25% decrease.
从80美元降到60美元是下降25%。percent increase
noun百分比增长
The increase in a value shown as a percentage of the original value.
A price rise from $50 to $60 is a 20% increase.
价格从50美元涨到60美元是增长20%。perimeter
noun周长
The total distance around the outside of a shape.
The perimeter of a 5 by 3 rectangle is 16.
5乘3的长方形周长是16。垂直线
Lines that meet at a right angle; their slopes multiply to −1.
Perpendicular lines have slopes of 2 and −1/2.
两条垂直直线的斜率是2和−1/2。pervasive
adjective普遍的，弥漫的
Spreading widely through every part of something.
Advertising has a pervasive influence on culture.
广告对文化有着无孔不入的影响。pessimistic
adjective悲观的
Expecting bad things to happen.
Some economists are pessimistic about growth next year.
一些经济学家对明年的增长持悲观态度。pi
noun圆周率
The number π, about 3.14159, the ratio of a circle’s circumference to its diameter.
Leave your answer in terms of pi.
用含π的形式写答案。
plausible
adjective似乎合理的
Seeming reasonable or likely to be true.
The hypothesis is plausible but not yet proven.
这个假设看似合理，但尚未得到证实。point-slope form
noun点斜式
The form y − y₁ = m(x − x₁) for a line through a point with slope m.
Use point-slope form for the line through (2, 5) with slope 3.
用点斜式表示过(2, 5)且斜率为3的直线。polygon
noun多边形
A flat closed shape with straight sides.
A hexagon is a polygon with six sides.
六边形是有六条边的多边形。polynomial
noun多项式
An expression made of terms with variables raised to whole-number powers, such as 3x³ − x + 2.
The polynomial has degree 3.
这个多项式的次数是3。population
noun总体
In statistics, the whole group that a study wants to learn about.
The population is all students at the school.
总体是该校的全体学生。posit
verb假定
To suggest an idea as a basis for argument or discussion.
The researcher posits that sleep improves learning.
研究者假定睡眠能促进学习。正相关
A relationship where one variable tends to increase as the other increases.
Height and arm span show a positive correlation.
身高和臂展呈正相关。pragmatic
adjective务实的
Dealing with problems in a practical, realistic way.
The mayor took a pragmatic approach to the budget.
市长以务实的方式处理预算。preclude
verb排除，使不可能
To prevent something from happening or make it impossible.
The small sample precludes firm conclusions.
样本太小，无法得出确切结论。premise
noun前提
An idea that an argument is based on.
The argument rests on the premise that people act rationally.
该论点建立在人们行为理性的前提之上。previously
adverb以前
A transition meaning "before now" or "earlier".
Previously, scientists thought the species was extinct.
以前，科学家认为该物种已经灭绝。prime number
noun质数
A whole number greater than 1 whose only factors are 1 and itself.
7 is a prime number, but 9 is not.
7是质数，但9不是。prism
noun棱柱
A 3D shape with two identical ends and flat sides.
A rectangular prism has six faces.
长方体棱柱有六个面。probability
noun概率
How likely something is to happen, from 0 (impossible) to 1 (certain).
The probability of rolling a 6 is 1/6.
掷出6的概率是1/6。product
noun积
In maths, the result of multiplying numbers together.
The product of 4 and 5 is 20.
4和5的积是20。prominent
adjective杰出的；显著的
Important and well known; or easy to see.
A prominent scientist reviewed the paper.
一位著名科学家审阅了这篇论文。proportion
noun比例式
In maths, an equation showing that two ratios are equal, such as 2/3 = 4/6.
Set up a proportion to find the missing value.
列出比例式来求缺失的值。