那个贼眉鼠眼的家伙一直在学校门口徘徊，引起了保安的注意。

The ___shifty-looking guy kept loitering near the school gate, which caught the guard's attention.

那个眼神闪烁的男人避免目光接触，让我感到不安。

The ___shifty-looking man avoided eye contact, making me feel uneasy.