鼻涕 (bí tì): 鼻粘液

He forgot to wear a scarf when going out in winter. As soon as the cold wind blew, his nose started running immediately, and he had no choice but to keep wiping it with tissues.

The child caught a cold, and his nose wouldn't stop running. His mother wiped his nose while coaxing him to take medicine.

Seeing cockroaches everywhere in the kitchen, she was so disgusted that she almost threw up, and even her nose started running.

He blew his nose hard, blew the mucus into a tissue, then wrapped it up and threw it in the trash can.

Grandpa is getting old and often has a runny nose without realizing it, so he always keeps a handkerchief in his pocket.