The drift of the icebergs in the sea endangers the ships.
海上山漂流危及船只安全。
In scyphozoan jellyfish, the free-swimming medusa form is the dominant stage, with the sessile polyp form found only during larval development.
自由游泳水各海洋,包括常沿海岸线漂流盘形动(如甲壳动)。
Later that afternoon I went to another lecture, about ice, in all its varieties: frazil, grease, brash, shuga, pancake, white, drift, rafting and fast.