没有期限的英文

1.此卡没有使用期限：This card has no deadline .2.使用次数2次：It can be used twice at most.3.在最需要我的时候使用 ：You can use it when you need me most.4 此卡一次只能提一个要求：You can get offered a requirement with it at a time..自我感觉翻译得还可以，希望能帮到你。

\"The plan can be changed, dreams need to implement, agree without time limit\" how to say in English?

1. This card no use period 2. Use number 2 times 3. In most need me use sometimes can't forget, that had happenedMake a correctionThis card one can only make a request