再有，和自1770年以来就没有发生过地震的海地不同，智利处在世界上最活跃的地震带之一，挨着太平洋的“火圈”。

Moreover, unlike Haiti, which had not suffered an earthquake since 1770, Chile lies in one of the world’s most seismically active zones, along the Pacific “ring of fire.”

youdao

漂浮的救生圈用PVC膜制造，由绳子串联以形成一个稳定的、自支撑的整体。

The floating buoys, fabricated in PVC membrane, are attached together by cord to form a stable and self-supporting ensemble.

youdao

拖动转子的传动方式有圈带拖动，联轴器拖动和自驱动。

The driving force of the rotor is driven by the belt drive, coupling and self driving.

youdao

Many journalizations get made about those websites but they weren't tested against the kind of base line of what the youth culture actually look like.

很多记者圈的人自以为很了解这些类似的网站,但是他们并没有反应真实的情况,到底真正的年轻人的文化是怎样的。

麻省理工公开课 - 媒体、教育、市场课程节选