on end The two experts worked at the task of writing a prefa

on end
The two experts worked at the task of writing a preface to the new dictionary for three hours on end.
on end是最后的意思吗?
In time与on time 为什么on end.不能换成In time?
翻译成两个专家及时完成任务?

天外008 1年前已收到1个回答举报

wy286916214 幼苗

共回答了26个问题采纳率：96.2% 举报

on end 这里指连续的意思,in time 是及时的意思,on time 是准时的意思,不能换的.句子的意思是俩个专家做那个任务连续花了三个小时,那个任务是什么呢,是为一本新字典写序言.

1年前

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