正割函数的倒数,称为余割函数。The value of the complement of the secant is called the cosecant.现在,让我们回到阶乘函数上来。Now, let's return to the factorial function.在非自主的系统中, f是t的显函数.In a nonautonomous system, f is explicitly a function of t...
Until then, front line troops will be supplied by airdrop.前线部队直到那时为止将一直靠空投来获取支援.Almost immediately the airdrop was detected and engaged.几乎很快地空投被检测并且从事.Marine: Its going to be hard to take it down, can you airdrop us anyt...
He happened on the book in a secondhand bookstore.他在旧书店里偶然发现了这本书。He carried on a bookstore in the town.他在城里开了一家书店。Unable to find the book in this bookstore, he bought elsewhere.这家书店找不到此书, 他到别处买去了.I fell in with him at a ...