在: exist; be living公共汽车: bus; autobus上: upper; up; upward发问: ask a question在公共汽车上: in the bus; on a bus; on the bus the busy businessman did a business with the buyer在公共汽车上抽烟: smoke on the bus在公共汽车上给人让座: give a seat to someone on the bus在公共汽车上提要求: making requests on a bus公共汽车上: the wheels on the bus在公共汽车站: at a bus stop; at the bus stop我在公共汽车上见过他多次: i met him many a time in the bus在公共汽车上对乘客的指示: instructions given to passengers on a bus在公共汽车的前部: in the front of the bus在公共汽车的前面: in front of the bus在火车上发问: asking questions on a train乘公共汽车上班: to take a train公共汽车上司机: busman公共汽车上下站: am 8am bus loading zone坐公共汽车上班: take a bus to work在公共汽车上大声喧哗是一种粗鄙的行为: talking loudly on a bus is a sign of vulgarity她站在公共汽车的前部: she is standing in the front of the bus注意切勿在公共汽车前穿过: caution do not cross in front of bus〔美国〕公共汽车。: auto-bus巴士（公共汽车）: bus乘公共汽车: bus ride; by bus (car, train…); by bus/ train; take a bus = catch a bus; take a/by bus; take bus; taking a bus; takingabus; travel by bus; traveling by bus
