It is the key issue to affect the operation safety that air charge once more when trains apply cycle breaking on Downhill Slope interval.

列车在下坡道区间循环制动时的再充气是影响列车安全运行的关键问题。

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There are plenty of other benefits, too; it doesn't charge city tax; it has both air conditioning and a heater for the rooms; it also has free Wi-Fi in every room.

还有很多别的优点：它免收城市税；房间里有空调和暖气；每个房间都有免费的无线网络。

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We, in fact, borrow oxygen or steal oxygen from the air free of charge.

我们事实上免费从空气中,借或者偷氧气。

麻省理工公开课 - 固态化学导论课程节选

Both American and Delta Air Lines charge for frequent flier award redemption.

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"Air Force prosecutors could charge Gregory Robbins with simple assault, but they couldn't charge him in the death of the couple's child, " Myrick said.

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Most recently, Alexandre de Juniac, a chief of staff to Christine Lagarde when she was finance minister, took charge at Air France in spite of having no operating experience of the airline business.

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