参考例句

1. It may rain; You'd better take an umbrella just in case .

   可能下雨, 拿把伞吧, 以防万一。

2. You'd better have two strings to your bow, just in case of emergency.

   你最好有两手准备, 以防万一。

3. It may rain you'd better take an umbrella (just ) in case (it does).

   可能下雨--你最好带把伞, 以防万一（下起来）.

4. He gripped his pistol tightly, just in case .

   他握紧手抢, 以防万一。

5. I'll run you a copy just in case .

   我给你搞一个副本吧，以防万一。

6. Take an umbrella just in case .

   带把雨伞以防万一吧。

7. in case of trouble call 911; I have money, just in case .

   如果有什么困难的话，请拨打911；我带的钱仅是以防万一。

8. The sun is shining, but I'll take an umbrella just in case .

   现在是晴天, 但我还是带上雨伞以防万一.

9. The bus is usually on time, but start early, just in case .

   汽车一般是准时的，但是要早点动身，以防它万一早开。

10. The bus is usually on time, but starts early, just in case .

    这辆公共汽车通常是准时的，但要早点动身以防万一。