n.幼兒床；吊床
n.小屋；村舍；棚；護(hù)套；鞘
abbr.[數(shù)]余切(=cotangent)
A hanging, easily swung cot or lounge of canvas or heavy netting suspended between two trees or other supports. 吊床一種易擺動(dòng)的吊床或躺椅，用帆布或厚網(wǎng)掛在兩樹或別的支撐物之間
