/ˌɡer.ənˈtiː/
a firm promise that you will do sth or that sth will happen 保证；担保
He gave me a guarantee that it would never happen again.
They are demanding certain guarantees before they sign the treaty.
他们要求得到某些保证后才签署条约。
to promise to do sth; to promise sth will happen
guaranteed to:
certain to happen or to do something肯定会；必定会— followed by to + verb接动词不定式
If we don’t take an umbrella, it’s guaranteed to rain. [=it will certainly rain]
肯定会下雨的，我们还是带把伞吧。
He’s guaranteed to reject my ideas.
他肯定会拒绝我的想法。