It 's best to err on the safe side.

即使错，最好也错在谨慎上面。

youdao

But you can't quantify exactly, so err on the safe side.

不过你没法子知道准确数量，所以这点小错在安全线以内。

youdao

Make sure to check with the documentation for your framework to be sure; if you're still unsure, do the validation to err on the safe side.

确保查阅文档以保证框架的安全性；如果仍然不确定，请进行验证以确保稳妥。

youdao

Since the scientific community is divided over the subject, it would seem prudent to err on the safe side by building suitable sea defences.

BBC: News Online