MH: The free content is a business strategy.

MH：免费内容算是一种商业策略吧。

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MH: the screencasts follow the book for the most part, but the screencast format leads to a very different and complementary learning experience.

MH：嗯，绝大多数视频还是跟着书走的，它们主要还是提供了跟读书完全不同的学习体验。

youdao

The principal mission of the MH-60R multi-mission helicopter is to protect the fleet from submarines and surface vessels and provide a maritime strike capability.

MH - 60r多任务直升机的主要任务是保护潜艇和水面舰队，并提供海上打击能力。

youdao

The car uses a 1.8-liter, 98-horsepower four-cylinder gasoline engine with an 80 hp (60 kW) electric motor charged on a Ni-MH battery.

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It takes 18 hours to break down our current MH-53s, an additional 12 hours to build them up, and then a functional check flight before you know that it's safe to fly.

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