单词 to think deeply 例句 DEFINITIVE EXAMPLES 权威例句〔strenuous〕To think deeply is a strenuous task.深思是很费脑力的事。英汉大词典 英语例句辞典收录了559068条英语例句在线翻译词条,基本涵盖了全部常用单词及词组的例句翻译及用法,是英语学习的有利工具。 ...