中文不够明确：从A成立，我们不可以得到B成立的结论。From the fact that A is true, we can‘t get the conclusion that B is true.从A成立，我们可以得到B不成立的结论。From the fact that A is true, we can get the conclusion that B is not true.从A成立，我们无法得到B是否成立的结论。From the fact that A is true, we can't get the conclusion if B is true or not.仅从A成立，我们无法判定B成立。Only by...
