定义
to roam (through the fields): 漫步，闲逛（在田野间）
I have seen the headless ghost roaming the halls many nights. 在夜晚，我曾多次看见无头鬼魅在大厅游荡。
- "Over the years, dinosaurs, these gigantic lizards which roamed the earth billions of years ago, have become a controversial subject."
- "No doubt you've heard rumors of the efficiency expert who has been roaming our halls periodically since April."
