Definition: a promise that something will be done or will happen Level: C2
这并不能保证它真的有效。
There's no ___guarantee that it actually works.
在严重的危机中，无法保证人们不会无家可归。
There is no ___guarantee against homelessness in a severe crisis.
项目的成功并不能保证未来能获得资金。
The success of the project is not a ___guarantee of future funding.
