I apologize for not writing in such a long time, but I've just been feeling lazy, like my body is a heavy weight that I'm too weak to carry around.
我很抱歉这么长时间没有写信，但是最近总感觉很懒，就像我的身体很沉重，我太虚弱了以致不能随身携带。
The exhaust temperature is too high, because the air valve in the component such as often, high accident rate, not damage suitable for a long time.
该机由于排气温度过高，导致气阀等零部件经常损坏，事故率高，不适合长时间运行。
If you fail, you can always retake in a few months time, which is not too long in terms of your whole life.
即使失败了，你也能用几个月时间重头再来，相对于整个生命来说，几个月并不算长。
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