a. marked by keen caution and watchful prudence
a. 谨慎的, 小心的, 机警的, 周到的, 唯恐的
1. She was wary of strangers in the dark.
她对黑暗中的陌生人感到警惕。
2. The dog was wary when meeting new people.
这只狗在遇到新人的时候很警惕。
3. He gave a wary look at the suspicious package.
他对那个可疑的包裹投去警惕的一瞥。