Extremals
極值曲線
??? 情景例句
We'll go together.
我們一起去。
When I'm going to buy a TV set next time, I'll buy a console model.
下次買電視機(jī)的時(shí)候，我買叫大屏幕的。
Only in a sparsely-populated rural community is it possible to disregard it.
只有在人口稀少的農(nóng)村，才可以忽視準(zhǔn)時(shí)的習(xí)慣。