late 14c., from Old French onereus, honereus (14c., Modern French onéreux) and directly from Latin onerosus, from onus (genitive oneris) "burden" (see onus).
实用例句
1. My household duties were not particularly onerous.
我的家务活并不繁重.
来自《简明英汉词典》
2. This obligation sometimes proves onerous.
这一义务有时被证明是艰巨的.
来自英汉非文学 - 行政法
3. 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.
来自辞典例句
4. This is the most onerous task I have ever undertaken.
这是我承担过的最艰巨的任务.
来自辞典例句
5. The job had become reduced quickly to its onerous humiliating routine.
