"Beware" is the Engpsh word for "当心" and is pronounced /bɪˈwɛr/.

The word "beware" comes from Old Engpsh "be worð" which means "to be worthy" or "to be respected." Over time, the word came to be used as a warning or caution, and is now commonly used to mean "be careful" or "watch out."

Here are some examples of how "beware" can be used in a sentence:

"Beware of the dog" (小心那只狗)
"Beware of pickpockets in crowded areas" (在人多的地方小心小偷)
"Beware of making rash decisions" (小心做出轻率的决定)