“constant level”例句

单词 constant level 例句 DEFINITIVE EXAMPLES 权威例句〔CHANGE/NOT CHANGE〕We live next door to a busy street and there is always a constant level of noise in the background. 我们的家紧邻着一条热闹的大街，街上传来的噪音持续不断。朗文写作活用〔critical mas...