Lǎoshī ràng xuéshēng guānchá qiūyǐn de huándài wèizhì.
The teacher had students examine the position of the earthworm’s clitellum.
Tips
usage
In biology textbooks, 环带 is specifically the swollen ring on annelids that secretes the egg cocoon. Outside biology, the literal sense “ring-shaped band” still works in geometry or engineering contexts.
