1. The boys felt tired so they put out the fire and crept into their tent .
    孩子们都挺累，于是他们把火扑灭，钻进了帐蓬。

2. The boys felt tired so they put out the fire and crept into their tent.
    于是他们扑灭了篝火，钻进了帐篷。

3. No one noticed the boy as he crept off.
    当男孩从船里爬出来时，谁也没有发现他。

4. Ruth was asleep, so he crept downstairs.
    露丝还在睡，于是他就蹑手蹑脚地下了楼。