unless and until造句

1、Unless and until there are adequate demonstrations, it is possible this market panic will continue.
除非有足够充分的证明，否则市场的恐慌仍将继续。

2、An acceptance has no effect unless and until it is communicated to the offeror.
一个承诺只有通知到要约人时才发生效力。

3、I will not believe it unless and until he tells me so.
除非他亲口对我说,否则我决不相信。