Acrobatism
n. 杂技
🗣️ 情景例句
I have always worn a clip-on bow tie.
我都是用夹上去的领结。
Fooling around
闲荡
But instruments far more delicate than that were needed if any really serious advance was to be made.
但是，如果要取得真正重大的进展，需要有比这种装置精细得多的仪器。