It will also carry two mini-helicopters that will serve as backups to retrieve tube samples.

这架宇宙飞船还将携带两架微型直升机，它们将作为备用工具来取回样本管。

He said the latest collection effort marks the beginning of many more to come for the rover, which has 43 sample tubes to fill.

他说，最新的收集工作标志着火星车将开始更多的收集工作，火星车有43个样管需要填充。

Secondly, it did something it never had been  designed to do – it emptied out its core sample tube onto the floor.

其次，它做了一些从未设计过的事情——将核心样品管倒在地板上。