be prepared against want;Be prepared and you won't be sorry.;have a second string [two strings] to one's bow;If one is prepared, he will be safe. ;

We will have to be mindful of possible adversities and be prepared for the worst.
要居安思危,有备无患.
来源:互联网摘选I want to learn as much as possible about the industry so that I'm better prepared.
我想尽可能多学一些关于这个行业的知识,让自己更有备无患。
来源:《柯林斯高阶英汉双解学习词典》
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