noun [抽象名词]<正式>懒散，怠惰；树懒；<罕>一群熊（a sloth of bears）
A sloth is an animal from Central and South America. Sloths live in trees and move very slowly.
树懒(见于中美洲和南美洲)
slo(看作slow慢的) + th(看作thing事) → 做事慢吞吞的 → 懒惰
单词造句:
A sloth is an animal from Central and South America. Sloths live in trees and move very slowly.
树懒(见于中美洲和南美洲)