我曾经在一次产前辅导课上和她有过一面之缘。I'd met her briefly in a prenatal class.所有攻读英语的本科生每周上一次导师辅导课.All undergraduates reading English attend a turtorial group each week.他还告诉我说你的辅导课和讨论课出勤率不高。He also told me that your attendances at h...
Many geophysicists find this technique unsatisfactory.许多地球物理学家发现了这种方法的缺陷.Explorationists in general and geophysicists in particular search for hydrocarbon traps.绝大部分勘探家和部分地球物理学家寻找的是烃类圈闭.Explorations in general and geophy...