must be doing sth发音 意思翻译 一定在做某事 相似词语短语 doing sth───正在做某事 be busy doing sth───忙着做某事 be must───必须 be better off doing sth───做某事更好 enjoying doing sth───喜欢做某事 appreciate doing sth───感激做某事 be doing───做;现在进行时;表达当时的行动(状态) avoid doing sth───避免做某事 start doing sth───开始做某事 双语使用场景 英语使用场景 相关推荐 repair with rescue disk okiwd make a day of it mom club prize cup perfect for eating mom coffee neting normal clearance paint ball perfect for me lair d matrial studio must be done letstakearest readingheart letstakeasingingclass readinghelps me a lot okiwill paint balloon oppion