onerous

adj.

繁重的；麻烦的；负有义务的；

1. Overtime work is often onerous, though it is well paid.
   报酬很好，但常常是很繁重的。
2. She desired a fixed occupation-no matter how onerous, how irksome.
   她希望有个固定的职业，不管这个职业多么繁重，多么令人厌倦。
3. I've always led an onerous timetable but I like it.
   我的日程表总是排得紧紧的，但我喜欢这样。

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