train的過去分詞是trained還是trainnd

現在分詞： training過去式： trained過去分詞： trained 擴展資料

To make the training realistic the simulation operates in real time.

為使訓練真實，模擬是實時運行的。

The company needs to improve its training and retention of staff.

公司需要改進對員工的培訓和留用工作。

The train was dead on time.

火車正點出發。