SAT词汇技能2 - 第 17 课

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

激变

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

催化剂

a large weapon that was used in ancient times to throw stones or other objects with great force

弹弓

a large waterfall where water rushes forcefully over a height

瀑布

the degree of roundness exhibited by a three-dimensional object

球度

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

球体

a measuring tool used to determine the roundness of a curved surface

球径计

someone who moves from one country to another with the intention of settling there permanently

移民

to leave one's own country in order to live in a foreign country

移民

to disturb or unsettle someone, causing them to feel worried or uneasy

烦扰

a disruption or disturbance of a normal state of mind or emotions

扰动

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

绷

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

堡垒

someone who spends or uses resources recklessly or wastefully

败家子

impressively great in amount or degree

巨大的

a remarkable example of a particular quality, skill, or achievement

神童

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

someone who can write or approve a law as a member of a legislative body, usually elected by people

立法者