您要查找的是不是：
- These men work underground for 6 hours at a time,mining for coal. 这些人在地下工作一次挖煤6小时。
- These men work underground for 6 hours a day ,mining for coal . 这些人每天在地下采煤6小时。
- These men work underground for 6 hours a day,mining for coal. 这些人每天在地下采煤6小时。
- These men work underground for 6 hours at a time, mining for coal. 这些人在地下采煤，一次要连续工作6。小时。
- These men work underground for 6 hours a day , mining for coal . 这些人每天在地下采煤6小时。
- These men work underground for 6 hours a day , mining for coal. 这些人每天在地下采煤6小时。
- I'll swap you three of mine for one of yours. 我以我的三个换你一个。
- You're well-off for coal, I hope. 但愿你们有足够的煤。
- Location, tracking and enquiry management for coal mine. 煤矿井下人员的定位、跟踪、查询管理。
- They are mining for coal. 他们在开采煤矿。
- They were mining for coal . 他们在采煤。
- I will swap you three of mine for one of yours. 我以我的三个换你一个。
- The demand for coal begins to slacken off in the spring. 煤的需求在春天开始减少。
- He labored in the mines for 30 years. 他在矿场里辛勤工作了三十年。
- I ate mine for snack with some garlic hummus! 我吃着带有蒜末的小吃。
- Well, here's mine for the Princess. 好吧,在这里是我的因为公主。
- The merchant received a large order for coal. 那个商人收到了一份购买许多煤的定单。
- How/What did you do for coal during the miners' strike? 矿工罢工期间你是怎样搞到煤的?
- Six men have been trapped in a mine for seventeen hours. 六个人困在矿井里已达十七个小时之久。
- We' re poorly off for coal at the moment. 此刻我们缺煤。
