Electronic sentry
[计] 电子报警器, 电子哨兵
🧩 词语组成解析
sentry
['sɛntri]
n. 哨兵;警卫;
🗣️ 情景例句
I'm afraid I stayed too long.
恐怕我呆得太久了。
Please come in; you're right on time.
请进，你正好准时到来。
Yes, thank you. We enjoyed ourselves very much.
挺好，谢谢你。我们玩得非常愉快。