由一截连在一起的充气袋子组成，能放在人的胳膊底下提供浮力；用于学水的儿童。
A life preserver consisting of a connected pair of inflatable bags that fit under a person's arms and provide buoyancy; used by children learning to swim.
胳膊和腿是人体不可缺少的组成部分。
一个由考古学家和技术人员组成的队伍发现了一系列青铜制成的头、胳膊、腿和手指。
A team of archaeologists and technicians uncovered an array of bronze heads, arms, feet, and fingers.
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