adj.繁重的，麻烦的，负有义务的
My household duties were not particularly onerous.
我的家务活并不繁重.
This obligation sometimes proves onerous.
这一义务有时被证明是艰巨的.
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.
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