Underkeeper
n. (森林或公园等的)助理管理员
🗣️ 情景例句
Help yourselves.
请随便用。
We've only sold our product at trade fairs, not in an on-going sales campaign.
我们的产品只在商展时展售，而没有办促销活动。
I lost the door key about here.
我在这附近掉了门钥匙。