A right-angled bend in a pipe or conduit; an elbow. 直角弯，肘导管或管道中的直角弯; 肘
A sharp bend in a river or road. 急弯处河流或道路的急拐弯处
A tight curl, twist, or bend in a length of thin material, as one caused by the tensing of a looped section of wire. 扭结一段长度的材料产生的绷紧的卷曲，曲折或弯曲，例如因拉紧线的有环部分
A bend in a pipe, bar, or other straight continuous piece made to allow it to pass around an obstruction. 弯管，接头管管子、杆或其他直而长的东西的一个弯，使得它能避开一障碍物
