Bellybutton
n. 肚脐
🗣️ 情景例句
My mother knows all there is to know
我母亲完全懂得
I know he will answer your question.
我知道他会回答我的问题。
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。