Fast-stepping
adj. 迅速的，活跃的
🧩 词语组成解析
fast
[fæst]
adj. 快的;走得快;感光快的;紧的;
adv. （比准确的时间或宣布的时间）快;迅速地;紧紧地;彻底地;
vi. 禁食，（尤指）斋戒;
n. 禁食期，斋戒期;断食，节食;
[计] 步进式, 改变
🗣️ 情景例句
She has the ability to keep calm in an emergency.
她有处变不惊的本事。
Two is company, but three is none.
两人成为伴，三人不结侣。
and then generalized the results of his many experiments into the famous law of free fall.
然后将多次实验结果概括成著名的自由落体定律的人。