To meet by chance
偶然碰见
I often bump into him at the supermarket.
我经常在超级市场同他不期而遇
To murder.
干掉，谋杀
reach the lowest point in performance or ranking without improving or deteriorating further
低谷徘徊，盘旋谷底
the economy was still bumping along the bottom.
经济形势仍然低迷。
suddenly and shockingly (especially of an unpleasant or disillusioning surprise)
突然地，震惊地
the scandal brought them down to earth &B{with a bump}.
丑闻让他们一下子从幻想中清醒过来。
(informal)murder someone
(非正式)谋杀某人
(informal)make something larger
(非正式)使…变大
the hotel may well bump up the bill.
旅馆可能多开账。