Equipped to float with impermeable canvas skirts, these tanks were to propel themselves to the beach with an ad hoc propellor and then resume normal operation. 这些坦克车下截设有不透水帆布围裙，以便漂浮，并特设螺旋桨，以便向海滩推进，登陆之后即可照正常操作。
propellor英英释义
Noun:
a mechanical device that rotates to push against air or water
