n. 贸易;行业;<美>顾客;买卖;
vt.& vi. 交易,经商;
vt. 交换;经营…交易,做…的买卖;
vi. 贸易;买卖;以物易物;
🗣️ 情景例句
Good afternoon, sir.
下午好。
It never rains but it pours.
祸不单行。(不鸣则已,一鸣惊人。)
Marine Studio biologists have pointed out that, however intelligent they may be, it is probably a mistake to credit dolphins with any motive of lifesaving.