a sudden or disastrous event that destroys or changes a whole region or system

大灾难, 灾变
a person, thing, or event that provokes or accelerates change or activity by introducing new perspectives or actions

催化剂, 触发因素
a large weapon that was used in ancient times to throw stones or other objects with great force

投石机, 弹射器
a large waterfall where water rushes forcefully over a height

瀑布, 大瀑布
the degree of roundness exhibited by a three-dimensional object

球度, 圆度
(geometry) a round 3D shape like a ball that is slightly flattened at the top and bottom points

球体, 旋转椭球体
a measuring tool used to determine the roundness of a curved surface

球径仪, 用于测定曲面圆度的测量工具
someone who moves from one country to another with the intention of settling there permanently

移民, 移居者
to leave one's own country in order to live in a foreign country

移民, 移居国外
to disturb or unsettle someone, causing them to feel worried or uneasy

扰乱, 使不安
a disruption or disturbance of a normal state of mind or emotions

扰乱, 干扰
to temporarily stitch two pieces of fabric together with long, loose stitches that can later be easily removed

疏缝, 粗缝
a fortified structure extending from a wall, typically angled, for defensive purposes

棱堡, 堡垒
someone who spends or uses resources recklessly or wastefully

挥霍者, 浪费者
impressively great in amount or degree

巨大的, 可观的
a remarkable example of a particular quality, skill, or achievement

奇迹, 奇观
an individual, often a leader or authority figure, who possesses the power to create laws, particularly not directly elected by the people

立法者, 法律的给予者
SAT词汇技能2 |
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