“周中”用英语怎么说？

在过去的6周中，该地区曾经发生过零星的炮击。The area has been the scene of sporadic artillery duels over the last six weeks.一周中,状态除了波动是正常的.It's natural activity levels to fluctuate throughout the course of a week.一周中有多少小时培训比较合适?How many ...