crawler
noun [ C ] uk/ˈkrɔː.lər/ us/ˈkrɑː.lɚ/
(MOVING)
UK只会爬行的婴儿，还没学会走路的婴儿
a baby who has not yet learned to walk
（车辆等）徐徐移动之物;缓缓爬行的东西
something, such as a vehicle, that moves very slowly
(TRYING TO PLEASE)
UK informal disapproving马屁精;卑躬屈膝的人;阿谀奉承的人
a person who tries hard to please others in order to get an advantage
(INTERNET)
internet & telecoms specialized (also web crawler)网络爬虫（程序）
a computer program that automatically searches for information on the internet, usually in order to index (= list) internet content