If I only tried to ring once or twice then is that really a big enough sample?

如果我只是试图打一两次，那么这是一个足够大的样本了么？

youdao

If I only tried to ring once or twice then is that really a big enough sample?

如果我只是试图打一两次，那么这是一个足够大的样本了么？

youdao