[ dàodǐ ] 1.(到尽头) to the end; to the finish 短语和例子 打到底 fight to the finish; 坚持到底 hold on to [till] end2.(最后) at last; in the end; after all; finally 短语和例子 试验到底成功了。the experiment finally proved to be a success.3.(究竟) ever; indeed 短语和例子 你到底说了些什么? what on earth did you say?4.(终究) after all; in the final analysis 短语和例子 别灰心, 这工作对你说来到底还是生疏的。 don't get discouraged, you are new to the work after all