toil at

基本解释

Many of the foreigners come here to toil at sea or on farms or in factories, providing cheap labor in jobs shunned by South Koreans.
很多外籍劳工到韩国做海员，或是进入农场和工厂工作，他们提供了韩国人不愿意低就的廉价的劳动力；
Tireless servants willing to toil at jobs we don't want to do or are unable to do, they can clean our homes, mow our lawns, and perform many other household tasks.
它们不知疲倦的在我们不想做或者不能做的岗位上辛勤的劳动着，它们能够打扫我们的房间、修理我们的草坪、以及其他许多家务劳动。
In the nearby factory behind rusted gates, 40 workers toil at machines that transform cocoons into silk thread.
在附近一家工厂，锈迹斑斑的铁门里， 40名工人站在机器前把蚕茧加工成蚕丝。

(SAYING) He says he was shocked to learn that when the Khmer Rouge took power,they emptied out the capital Phnom Penh at gun point and sent millions of people, including the old and sick, to toil in the countryside.

Enter through a concrete lobby in an anonymous building fronted by corrugated sheeting a few blocks from the Pacific Ocean in West L.A. and suddenly you're in a hangar-esque space where some 200 acolytes toil at desks and tables constructed from the same cheap red plywood used for packing cases.
FORBES: Magazine Article
No longer do single-task workers toil away at single-task machines.
ECONOMIST: Why pay is becoming less equal
Hundreds of millions of Chinese toil for long hours at low wages, often in dirty and dangerous conditions.
ECONOMIST: China's public holidays: Golden weeks or silver days?