1. A robot-arm from the Endeavour will grab the telescope and hold it while the astronauts make the necessary repairs.
    当宇航员进行必要的修复工作时，"奋进"号上的一只机器手将抓住望远镜并托住它。

2. Some children grab for the treat the minute he's out the door.
    一些孩子当研究人员一走就一把抓过糖来吃。

3. It was an important reference work and Humboldt made an instinctive grab for it.
    那是一本很重要的参考书，洪堡本能地去抓它。