在不同场合,在不同的时期
one time and another one time with another;
有个时期;曾经,一度;
no, sir, they did not, although they noted that various expeditions had passed through that part of the country at one time and another.
没,先生,他们没有提到。不过他们有写到,时不时就有不同的探险队,会经过那个地方。
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