They had to travel everywhere by bus.是什么意思？

They had to travel everywhere by bus.

他们只得乘公共汽车出行。

they

pron. 他/她/它们，人们，大家，政府，当局，她们；

例句
The storms had abated by the time they rounded Cape Horn.
他们绕过合恩角时，暴风雨已经减弱。

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

travel

n. 旅行，进行，移动，漫游；vi. 旅行，传送，前进，行进，[篮球]走步；vt. 经过，通过，游历；

例句
It is generally not advisable for expectant mothers to travel by air after the 28th week of pregnancy.
怀孕28周以后的准妈妈一般不宜乘坐飞机出行。

everywhere

adv. 到处，处处，无论什么地方，四下里，漫，匝地；

例句
The techniques are being applied almost everywhere by big and small firms alike.
无论在大公司还是小公司，这些技术的应用几乎无处不在。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

bus

n. 公共汽车，巴士，大客车；v. 用公共汽车运送，乘公共汽车，用校车送，收拾 （餐桌）；

例句
The bus took absolutely ages to arrive.
公共汽车过了很长时间才来。