The inventor of the machine claims that it will reduce labor costs by virtually eliminating the need for manual weeding.

该机器的发明者声称，它将减少人工除草的需要，从而降低劳动力成本。

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To do any other kind of manual labor is to act like a slave."

从事其他任何体力劳动便是自贬为奴隶"

耶鲁公开课 - 美国内战与重建课程节选

This is impressive: he dropped out of both Dartmouth and Harvard, and he did so to take laboring jobs, each time enacting a conflict between intellectual life and manual labor that would be a persistent and central theme of his poetry.

令人印象深刻的是，他从,达特茅斯学院和哈佛大学都辍学了,来劳作，每一次都在,脑力劳动和体力劳动间发生矛盾,这也是他的诗歌的核心主题。

耶鲁公开课 - 现代诗歌课程节选

They renovated churches, tended to lepers, performed manual labor for farmers and artisans, preached, and prayed.

NEWYORKER: Rich Man, Poor Man

Mr. JONES: You know, I kept thinking of manual labor, like, making sandwiches or fixing shoes.

NPR: 'Heartless Bastards' Take Cautious Steps Into Limelight

So was chattel slavery and the back-breaking manual labor that kept these massive plantations thriving.

CNN: Django, in chains