名詞 crawler:

1. a person who tries to please someone in order to gain a personal advantage
   同義詞：sycophant, toady, lackey
2. a person who crawls or creeps along the ground
   同義詞：creeper
3. terrestrial worm that burrows into and helps aerate soil; often surfaces when the ground is cool or wet; used as bait by anglers
   同義詞：earthworm, angleworm, fishworm, fishing worm, wiggler, nightwalker, nightcrawler, dew worm, red worm

crawl.er

n.（名詞）
One that crawls, especially an early form of certain insect larvae.
爬行動物：爬行的東西，尤指某些昆蟲幼蟲的早期形體
A vehicle, such as a bulldozer, that moves on continuous belts of metal plates.
履帶式車輛：推土機之類的在延續(xù)的金屬履帶上移動的車輛