spermagone

例句：

1. 1. The hammer struck the nail firmly into the wood.
   锤子将钉子牢固地敲进木头。
2. 2. The anvil was used to shape iron.
   大锤被用来锻造铁。
3. 3. He hammered away at his work with great determination.
   他坚定地敲打着他的工作。