raft

/ræft/

a flat float (usually made of logs or planks) that can be used for transport or as a platform for swimmers

中文释义：筏子；木排

They built a raft from logs to cross the river.

他们用圆木造了一个筏子来过河。

The survivors clung to the raft until rescue arrived.

幸存者紧紧抓住筏子直到救援到来。