1. | 在地下;在地面下under the surface of the ground |
Rescuers found victims trapped several feet underground. 营救人员发现有受难者被困在地下几英尺处。 | |
toxic waste buried deep underground 深埋在地下的有毒废弃物 |
2. | 隐蔽地;隐匿地in or into a secret place in order to hide from the police, the government, etc. |
He went underground to avoid arrest. 他隐藏起来以防被捕。 |