train

　　train在教材中用作名詞,意思為火車,列車。

　　train除了以上用法外,還有以下幾種用法。

　　Ive trained my dog to fetch my slippers. (train用作動詞,意思為培養,訓練。)

　　His telephone call interrupted my train of thought. (train of thought是固定短語,意思為思路,思緒。)

　　He trained his camera on the birds. (train sth. on / at sth. / sb. 意思為用對準或瞄準某事物或某人。)