To be on the safeside, the researchers suggest that we should use computers less than before, or turn down our screens as much as possible before sleeping.
安全起见，研究人员建议，我们应该比以前更少使用电脑，或者在睡觉前尽可能地把屏幕亮度调低。
2
I took some extra cash just to be on the safeside.
我多带了一些现金，以防万一。
《牛津词典》
3
You might still want to go for an X-ray, however, just to be on the safeside.