谁能给我讲讲upon的用法
问题描述：
谁能给我讲讲upon的用法
rt
例如：the declaration formalities may be gone through with the customs in the ports upon the approval of the competent customs in the park.
答
介词 prep.1.在...之上,在...上面He laid a hand upon my shoulder.他把一只手放在我肩上.2.在...后立即3.根据;依靠We acted upon his instructions.我们根据他的指示办事.4.接近5.对着,向6.(走)上...,(爬)上...He c...