at times: 有时;不时
[例句]
The tide is very high.at times,
I like tom but he's very annoying at times.
at a time“一次,每次”,例如:
two at a time.每次进来两人。
He checked them off one at a time as they came in.他们进来时,他一个一个地核对。
注意它与at one time 的区别。
at one time一般指“过去某一时期,曾一度(=once)”或“同时”的意思。
如表示“同时”,则两者可通用。例如:
At one time I used to like her, but not any more.我曾一度很喜欢他,现在可不喜欢了。