presence of animal life in a forest

例句：

1. 1.The presence of the guests was felt throughout the room.
   客人的存在让整个房间都能感受到。
2. 2. The presence of the new manager has brought about a change in the company culture.
   新任经理的到来已经改变了公司的文化。
3. 3.The presence of the moon can be seen from the top of the hill.
   从山顶可以看到月亮的存在。