英语词汇communication signals简单造句、意思、用法及例句-英语例句辞典

单词	communication signals
例句	原声例句科学60秒-科学美国人 2021年3月合集 They understand their own communication signals and systems. 它们懂得自己的通讯信号和系统。迷人历史 Never again could communication signals be unmanned or ignored, and never again could ships sail without enough lifeboats for everyone. 通信信号再也不会无人值守或被忽视，船只再也不会在没有足够的救生艇供所有人使用的情况下航行。
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