and 测验EN[ænd] [ɛnd] [ən(d)] [ɛn] [n̩] [-ænd] [-ɛnd]
US US ham and eggs
连和, 而且 维AND
- 问题 1 :
If the sun were a hallow sphere of its present size ___ the earth were placed at the center, the moon could [...]. Such a hallow sphere would hold more than a million balls the size of the earth.