These words of theirs became very famous: "Working people of all countries, unit!"

他们的这些话变得非常出名：“全世界无产者，联合起来！”

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Testing may not be fun, but having working unit and functional tests makes development a lot more fun.

测试可能不那么有趣，但是在开发过程中进行单元测试和功能测试使开发变得相当有趣。

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Working unit: you cannot communicate with your family and friend even.

工作单位：跥你甚至不能和你的家人和朋友通话。

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The decision to bring the shuttle down came after one of the orbiter's three key navigation tools -- an inertial measurement unit -- stopped working.

CNN: NASA to shuttle: Come home

From 1986 to the middle of 1988, I was there working for an anti-apartheid film unit which recorded the struggle for the international community and for the trade unions in South Africa.

BBC: NEWS | UK | Scotland | Revisiting a changed South Africa

The man who is perhaps the most popular player in the league took reps with the special-teamers, working as an upback with the punting unit.

WSJ: In First Showcase, Sanchez Upstages Tebow