“漂浮物”用英语怎么说？

这里, 一雌性漂浮物通过云雾林在哥斯达黎加.Here, a female floats through a cloud forest in Costa Rica.与太空中很小的漂浮物的碰撞可能完全摧毁一艘飞船.Collisions with small space flotsam can obliterate a ship.漂浮物在江面上时上时下地浮动.The float bobbed up and down on the river....