Keep going like that ─ you're doing fine.
就这样做下去——你做得蛮不错嘛。
She's a changed woman since she got that job.
她自从得到了那份工作，变得判若两人。
That must be her now.
这会儿一定是她了。
It's the fifth time that I've been to America.
这是我第五次去美国了。
It is crucial that we get this right.
我们把这个问题弄明白是极其重要的。