Alerters
(alerter 的复数) n. 报警器, 警报器；警报器服务
🗣️ 情景例句
After you.
请先走。
He that regards not a penny,will lavish a pound.
小钱不知节省，大钱将滥花。
The tour should last about an hour and a half.
这次参观大概需要一个半小时。