But many communication equipment and techniques have been out of date.
但是很多通讯器材和技术已经过期。
This sentence means that certain behaviors, phenomenon or opinions have been out of date, so to express a negative attitude or tone of the speaker.
这个句子的意思是某种行为、现象、看法已经过时了。表达说话人否定的态度或语气。
This sentence means that certain behaviors, phenomenon or opinions have been out of date, so to express a negative attitude or tone of the speaker.
这个句子的意思是某种行为、现象、看法已经过时了。 表达说话人否定的态度或语气。
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