no obj., with adverbial of direction
1- move about or travel aimlessly or unsystematically, especially over a wide area（尤指在宽广的地带）随便走, 漫步; 漫游：
tigers once roamed over most of Asia
老虎曾一度在亚洲大部分地区游荡
as adj. roaming roaming elephants.闲游的大象。
1.1
- with obj. travel unsystematically over, through, or about (a place)在…随便走, 漫步于; 漫游; 在…来回走动：
gangs of youths roamed the streets unopposed.
成群结队的青年在街上游荡, 没有人反对。
1.2
- (of a person's eyes or hands) pass lightly over something without stopping（眼睛）扫视; （手）扫过：
her eyes roamed over the chattering women
她的目光扫视着那些正在闲聊的女人
with obj. he let his eyes roam her face.他的目光扫视着她的脸。
1.3
- no obj.(of a person's mind or thoughts) drift along without dwelling on anything in particular（思绪, 想象力）遨游：
he let his mind roam as he walked.
散步的时候他任自己的思绪遨游。
1.4
- with obj. move from site to site on (the Internet); browse（在因特网上）漫游; 浏览。
派生词
roamer
noun词源
Middle English: of unknown origin.