The stars must have formed 10 to 15 billion years ago.这些恒星一定是形成于100到150亿年前。Athletics South Africa was formed by an amalgamation of two organisations.南非体育协会由两个组织合并而成。Specific groups may be formed to address specific issue...
上面说过, 你在应酬的场合,也可能发现同样的质疑.As we mentioned earlier , you may notice the same questioning in social conversations.上面说过, 你在应酬的场合,可能发现同样的质疑.As was mentioned earlier , you may notice the same questioning in social conversation...