alarm signal短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 警报 It gave an assistant just the chance she needed to push the alarm signal. 天赐良机，一个店员正好得空按响了警铃。 ebigear Describe the emergency alarm signal for passengers and crew. 请描述针对全体客人及员工的紧急讯号。 www.shipman.org.cn What does the abandon ship alarm signal sound like? 如何描述弃船员讯号的响声？ blog.sina.com.cn