what were doing at the time of the problem是什么意思
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whatweredoingatthetimeoftheproblem是什么意思whatweredoingatthetimeoftheproblem是什么意思whatweredoingatthetime
what were doing at the time of the problem是什么意思
what were doing at the time of the problem是什么意思
what were doing at the time of the problem是什么意思
事情发生时（你们）做什么?