The first class began.

第一节课开端了。

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Helping such firms grow is an extremely cost-effective way to create jobs, argues Mr Harthorne; the first class of finalists have already hired over 500 more people than the 330 they began with.

帮助这些企业成长是创造就业的成本效益极高的方式，霍桑说，第一批决赛选手刚开始一共只雇佣了330人，而现在他们雇佣了500多人。

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The first day of school began on a bright note for a teacher who was glancing over the class roll.

开学的第一天，一位老师正在浏览一份纪录学生名单的鲜亮的手记。

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No-one will ever know how the plan to attack the terrorists was hatched, but early indications from analysis of the recordings suggest it began in the front of the plane in first class.

BBC: News | NEWSNIGHT | Alison Hoglan interview transcript

Samsung started mass production of the industry's most advanced mobile DRAM (dynamic random access memory) chip, only 10 months after it began producing the industry's first 30nm-class based 2GB LPDDR2 memory in October, 2011.

ENGADGET: Samsung starts producing faster 2GB LPDDR3 memory for mobile devices, 128GB flash storage too