crawler

详细解释:n. 爬行者, 蠕动的东西, 虱, (澳)马屁精, 奴颜婢膝的人, 婴儿的罩衣

英语解释：

名词 crawler:

a person who tries to please someone in order to gain a personal advantage同义词：sycophant, toady, lackey