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更新日期：2026-08-14
The teacher asked his students to labour at obligatory courses.
老师要求学生在必修课上多下工夫。
There's no point in labouring at a tedious task.
辛苦地干单调乏味的工作没有意义。
The president laboured over his speech before he had it in final form.
总统在演说稿定稿之前进行了辛苦的修改。