“just to be safe” means to be careful to avoid something unpleasant. We use this phrase to explain why we’re doing something. Since we use this phrase so often, there are many variations of it. Below are some examples.
该短语意思是小心避免不愉快的事情发生。我们使用该短语是用来解释我们这样做的原因。“just to be safe”使用频率很高，有很多变体。下面是一些例子。
-(just) to be on the safe side 出于安全考虑
-(just) in case 以防万一
-(just) to be sure 保险一点
-(just) for good measure 保险起见
例句1:Just to be safe,let's locked all the doors before we leave.以防万一，我们出门前要把所有门都锁上。
