v.放下( down的现在分词 )；（尤指大口或快速地）喝下；使摔倒；击落（敌机等） 双语释义：adv.(副词)向下,在下面 from above towards a lower place or position; in a low or lower than usual place or level由大到小,由强到弱 into a smaller, lower, thinner, weaker, etc., state往南 in or towards the south处于低等地位,处于潦倒状态 in