Watch your step. 走路时要小心.
Look out! 小心.
Be careful! 当心! Don't trip. 不要跌跤了.
Beware of dog. 当心恶犬.
Hold on or you'll fall off. 抓紧一点不然你会跌下去. Be alert now! 要提高警惕!
On guard! 看招!(看剑!)
