楔

例句：

1. 1. The carpenter used a chisel to make a precise cut in the wood.
   木匠用凿子在木头上做了一个精确的切口。
2. 2. The boat was propelled by a strong current, and we needed to use a shoal of small boatsas a kind of wedge.
   船被一股强劲的水流推动，我们需要使用一小群小船作为楔子。
3. 3. The engineer used a wedge to pry open the door.
   工程师用楔子撬开了门。