He must make the proper use of his opportunities or he will infallibly perish.

他必须善加利用机会，否则他必定毁灭。

youdao

If they are real, they will infallibly be discovered, without your pointing them out yourself, and with much more advantage.

如果你真有这些优点，他们肯定会被别人发现，不必你亲自指出，而这样对你更有利。

youdao

Progress infallibly awakes, and, in short, we may say that it marches on, even when it is asleep, for it has increased in size.

总之，可以这样说，它睡着也在前进，因为人们发现它成长了。

youdao

And of course, the hedonist will also hasten to point out that just because we can't do this perfectly or infallibly, that doesn't mean we can't make educated guesses, right?

当然享乐主义者也会急于指出,不能因为无法完美绝对地做到，就意味着不能做出有根据的猜想？

耶鲁公开课 - 死亡课程节选

This cuts bureaucracy and waste, and can ensure (though not infallibly) that public capital is efficiently allocated among the deserving.

ECONOMIST: Community development finance