He was not expecting Colonel Qaddafi to reach Benghazi, he said, but wanted a few street-fighting skills under his belt just in case.
他说，他认为卡扎菲上校攻不到班加西，但要以防万一，因此他要学习一点巷战的战术。You'd bring along the invincible spear-head with you to be safe.
那你要记得带着这只铁枪头以防万一。He played 68 minutes for the reserve team so we were trying to protect him and have him on the bench just in case we needed him.
他在预备队打了68分钟的比赛，所以我们需要保护他，让他做替补是为了以防万一我们需要他。He thinks it might be a good idea for him to see his doctor. . . Just in case.
他认为就他而言看他的医生可能是一个好主意…仅仅以防万一。As a precaution, they took the President to a place in the White House nobody even knew existed -- Joe Biden's office.
为了以防万一，他们把总统带到了白宫里一个没有人知道它存在的地方——乔·拜登的办公室。She wondered if she should run in and get a shawl as well, just in case, then decided her pride was more important.
她想自己是不是应该跑回屋去也拿一条披肩来，以防万一，但最终还是自尊心占了上风。But just in case we are observing yet another expedient shift, it might be a good idea to understand precisely why socialism is a bad idea.
但是为了以防万一，我们有必要谈一下另一种转变，那就是准确理解社会主义的荒诞可能是一个好主意。Of course, you can never reply on the British summer weather, so taking an umbrella along might be a good idea just in case!
当然，你永远不能相信英国的天气，为了以防万一，最好是带一把伞。Or suggest that your partner buy his or her favorite brand (and then bring some of yours with you, just to be on the safe side).
或者你让伴侣购买他或她喜欢的牌子（同时也要带上你买的一些，这是以防万一）。