对于这次下潜，他并没有真正花时间去思考他应该需要注意什么。

For this dive, he didn’t really taketime to think about what he was going to need.

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中国国家海洋局表示，“蛟龙”号潜水器共计划潜水四次，第一次下潜是在北京时间周四凌晨5点26分，深度为4,027米。

In the first of four planned dives, the Jiaolong submersible reached 4, 027 meters at 5:26 a. m. Thursday, Beijing time, according to China's State Oceanic Administration.

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由于能源有限，灭雷具每次下潜的工作时间将受到限制。

Because of the limitation of power source, the working time of MDV in each dive will be limited.

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