(travelled, travelling; <美> 亦作traveled, traveling) no obj., with adverbial
1- make a journey, typically of some length or abroad旅行（尤指长途旅行或出国旅行）：
the vessel had been travelling from Libya to Ireland
船从利比亚开往爱尔兰
we travelled thousands of miles.
我们旅行了几千英里。
1.1
- with obj. journey along (a road) or through (a region)沿（路）旅行; 经过（某地区）：
he travelled the world with the army.
他随军队周游世界。
1.2
- usu. as adj. traveling go or be moved from place to place走动, 移动：
a travelling exhibition.
巡回展览。
1.3
- informal resist motion sickness, damage, or some other impairment on a journey〈非正式〉经受得住旅行（指在旅行中不眩晕、不会损坏等）：
he usually travels well, but he did get a bit upset on a very rough crossing.
通常他旅行状态不错, 但到了非常颠簸的路岔口时, 有点恶心。
1.4
- be enjoyed or successful away from the place of origin（在原地以外的地方）受喜爱, 取得成功：
accordion music travels well.
手风琴音乐广受欢迎。
1.5
- (of an object or radiation) move, typically in a constant or predictable way（物体, 放射线）运动, 移动（尤指做常态移动）：
light travels faster than sound.
光比声音传得快。
1.6
- informal (especially of a vehicle) move quickly〈非正式〉（尤指车辆）快速移动。
mass noun
1- the action of travelling, typically abroad（尤指海外）旅行：
I have a job which involves quite a lot of travel.
我的工作需要经常出差。
1.1
- count noun
travels
journeys, especially long or exotic ones（尤指长途或异域）旅程： perhaps you'll write a book about your travels.
可能你会写一本关于你旅行的书。
1.2
- as modifier(of a device) designed so as to be sufficiently compact for use on a journey（设备）旅行用的：
a travel iron.
一个旅行熨斗。
1.3
- the range, rate, or mode of motion of a part of a machine（机器部件的）运动范围, 运动速度, 运动模式：
two proximity switches detect when the valve has reached the end of its travel.
当阀门开到顶时, 两个临近开关就会感测到。
词源
Middle English: variant of TRAVAIL and originally in the same sense.