watchful
watchful相关例句和用法
The entrances are guarded by watchful security staff..入口处由警惕的保安人员把守。
watchful英英释义
注意的，警惕的英释adjadjvery careful to notice what is happening, and to make sure that everything is all right
watchful 真题例题
真题例句...children who are watchful will be better able to stay away from Unsafe situations...CET62009.6阅读理解
