If don't do anything ,the giant panda weight when it was born?改为同义句

问题描述:

If don't do anything ,the giant panda weight when it was born?改为同义句

If nothing has been done, the giant panda weight when it was born?

The giant panda will weight when it was born unless we do something ?????
不是很确定……

If nothing has been done,the giant panda weight when it was born?