1. The world, for once in perfect harmony with all its living things.
in harmony：和谐的
例：
The couple live together in harmony.
这对夫妇生活得很和谐。
Almost unconsciously she dressed in harmony with this note of simplicity .
她简直不自觉的打扮得跟这朴素的调子很调和。
2. He's holding back.
hold back：隐瞒，退缩
例：
When dangers come, no one hold back.
危险来临，无人退缩。
You must tell us the whole story; don't hold back.
你必须把整个事情告诉我们，不要隐瞒。
3. It can be assumed his carefree days with us are history.
carefree：无忧无虑的
例：
She daydreamed about a carefree vacation.
她幻想能有一个轻松愉快的假期。
Walk the path of a carefree life, desiring nothing.
清心寡欲走正道，以无为有乐消遥。
4. In short, our pal is doomed.
doom：面临厄运
例：
This would doom Turkey's EU chances.
这将葬送土耳其加入欧盟的机会。
Sadly, however, his search for the truth is doomed.
然而，可悲的是，他对真相的探索是注定要失败的。
The project was doomed to failure.
这工程注定失败。