unmanned

adj not manned; operated automatically or without a crew 无人的; 无人操纵的; 自动的: ,unmanned `railway signals 自动控制的铁路信号 * send an unmanned spacecraft to Mars 把无人驾驶的宇宙飞船发射到火星上去.

unlettered, unlicensed, unlike, unlikely, unlimited, unlined, unlisted, unliterary, unload, unlock, unlooked-for, unloose, unlovable, unloved, unluckily, unlucky, unmade, unman, unmanageable, unmanly, unmannerly, unmarried, unmask, unmatched, unmentionable, unmentionables, unmerchantable, unmindful, unmistakable, unmistakably, unmitigated, unmoved, unmoving, unnatural, unnaturally, unnecessarily, unnecessary, unnerve, unnerving, unnoteworthy,