The stars are the apexes of what wonderful triangles!星星是何等神奇的三角形的尖顶!There are 2 ~3 layers tunica cells in the reproductive shoot apexes whose surface were flat.而将来发育为果枝的腋芽,其生长锥为圆柱形,顶端表面平坦,体积较大,原套层数为2～3层.There are two ape...
某些课程是必修的，其他是选修的。Certain courses are compulsory, others are optional.不.许多罗列的课程都是选修的.No. A lot of these are listed as optional.这些选修的课程使得学生能够修一些他们有兴趣的科目.These electives allow students to study subjects that interest them....