Gmb
abbr. 胃粘膜屏障（gastric mucosal barrier）
🗣️ 情景例句
Have a good time.
好好玩。
Friends are like fiddle-strings,they must not be screwed too tight.
朋友有如琴弦，不能上的太紧。
Tickets, please! Tickets, please!
请出示车票！请出示车票！