事实上，这个系统通常会阻止任何想要注册他们不应该选的课程的人，也就是那些没有选必选先修课程的学生。
In fact, usually the system blocks anyone trying to sign up for a class they shouldn't be taking, who hasn't taken the courses you are required to do first as prerequisites.
我特别关心出勤率，所以如果周二下午你有实践而不能每周都出勤的话，你不应该选这门课。
I am especially concerned about attendance, so if you have the practice these Tuesday afternoons and can't be here every week, you shouldn't take this course.
也许我不应该选那些课，而应该学历史或新闻。
为什么她不应该自己选衣服去取悦自己呢？
Why shouldn't she pick out her own clothes to please herself?
在研究中，因为没有观察到心血管方面的好处，所以雷洛昔芬不应是首选或次选的预防心血管疾病的药物。
Because no cardiovascular benefit was observed in the study, raloxifene should not be used for the primary or secondary prevention of cardiovascular disease.
在研究中，因为没有观察到心血管方面的好处，所以雷洛昔芬不应是首选或次选的预防心血管疾病的药物。
Because no cardiovascular benefit was observed in the study, raloxifene should not be used for the primary or secondary prevention of cardiovascular disease.
应用推荐