ice raft

例句：

1. 1. They used to take alot of time to travel by iceraft.
   他们过去经常花很多时间乘冰筏旅行。
2. 2. The ice raft wascarrying supplies for the expedition.
   冰筏正在为探险队运送物资。
3. 3. Theteam decided to use anice raft to cross thefrozen lake.
   团队决定使用一艘冰筏过冰冻的湖面。