Indispensible
不可或缺
🗣️ 情景例句
Well, Grandpa, you're about five-nine or five-ten.
嗯， 爷爷。你大概是五英尺九或者五英尺十。
Do you like hot weather?
你喜欢热天？
And now medical care helps to keep people alive longer.
现在的医疗保健使得人们活得更长。