VERB
叩頭;磕頭；卑躬屈膝；唯命是從
If you say that someone kowtows to someone else, you are criticizing them because they are too eager to obey or be polite to someone in authority.
例句
See how stupidly they kow-tow to persons higher in the hierarchy.
瞧他們對上級唯命是從的樣子是多么愚蠢啊。