The one snag on the lander happened when the protectivesheath around the robotic arm didn't unwrap all the way after touchdown.
唯一的故障就是在探测器着陆后包围机械手臂的保护罩始终没能打开。
2
The spiral protectivesheath for the rubber tube with good elasticity is more in favor of being installed outside an oil pipe, and has longer service life.
A bare winter tree, a holdout on cement-bound Third Avenue in New York City, emerges from an unlikely square of bricks, its base encased in a protectivesheath.