The first-class compartment is situated at the front of the train.

头等车厢位于火车的前部。

《牛津词典》

Offer to train a class on your application or product.

提供一个应用程序或产品的培训课程。

youdao

Passengers in business class took breakfast on the high speed train between Madrid and Barcelona.

在往来于巴塞罗那与马德里之间的高速列车上，商务舱的乘客们正在享用早餐。

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At Bagram air field outside Kabul, Sergeant First Class Randy Geringer helps train 82nd Airborne Division soldiers to drive the M-ATV.

VOA: standard.2010.08.01

George Osborne was forced to pay for an upgrade after sitting in a first-class train carriage with a standard-class ticket.

BBC: Your highlights of 2012 in drawings

In addition, clubs are permitted to train their young players for a maximum of five hours a week nowhere near the 10, 000 hours which sports scientists calculate it takes to train a world-class athlete, from the time they start playing.

WSJ: Scoring Skills are Heading South

It's true that affordable rail passes and second-class coaches make train travel accessible to more people.

CNN: 8 reasons to trade up on trains