He has close-cropped hair which makes him look very energetic.

close-cropped 是由形容词 close（紧密的）和动词 crop（剪短）的过去分词 cropped 组成的复合形容词。crop 本意是"修剪、剪短"，cropped 表示"被剪短的"。 close-cropped 合起来形容头发被剪得非常短且整齐，紧贴着头皮的发型，这种发型会让人显得干净利落、精神抖擞。