问题描述：
send send up区别
it will soon be sending up four astronauts to repair it.这里我就搞不懂为什么家up···感觉没up也ok啊····
有区别么···
it will soon be sending up four astronauts to repair it.这里我就搞不懂为什么家up···感觉没up也ok啊····
有区别么···
问题解答：
我来补答展开全文阅读