by bus:乘公共汽车;坐公交车(表示出行方式,常用于说明“怎么去/怎么来”)。
/baɪ bʌs/
I go to school by bus.
我坐公交车去上学。
Because the roads were icy, we decided to travel to the next town by bus instead of driving.
因为路面结冰,我们决定坐公交车去隔壁镇,而不是自己开车。
由介词 by(表示“通过某种方式/手段”)+ 名词 bus 组成。这里的 by + 交通工具 是英语里常见结构,用来表达出行方式(如 by train, by bike)。bus 是 omnibus(拉丁语“给所有人的”)的缩略形式,最初指面向大众的公共交通。