1. And security: how to make such a big target attack-proof.
    并且还有安全问题：如何才能令这样大的一个目标免遭攻击。

2. Spirits labelled 95 proof contain only about 47 per cent alcohol.
    强度标为95的酒中含有47%的酒精。

3. If possible, he wanted proof before he would believe something.
    如有可能, 他在相信某种事物之前总要先看到证据.

4. I knew she would do this, because cooking was how my mother expressed her love, her pride, her power, her proof that she knew more than any one else.
    我知道妈妈会亲自下厨的, 因为烧饭做菜是表达她的爱、她的自豪和她在家中地位的方式，也可用以证明她比其他任何人都懂得多。