watchful
US /ˈwɑːtʃ.fəl/
UK /ˈwɑːtʃ.fəl/
形容词
1.
警惕的
paying careful attention and ready to deal with problems:
示例:
•
Under the watchful eye of their mother, the two boys played on the beach.
在 Lingoland 学习这个单词
警惕的
paying careful attention and ready to deal with problems: