不是，如果无效论点有真前提呢？

Nope. What if it's an invalid argument with true premises?

youdao

如果无效或不包含则要考虑追加保险。

If it does not, consider supplemental insurance.

youdao

如果无效，进行二线治疗。

If it is not effective, a second-line treatment is given.

youdao

如果无效，进行二线治疗。

If it is not effective, a second-line treatment is given.

youdao