M. m.
[医] 粘膜
🗣️ 情景例句
People are busy shopping and wrapping presents for relatives and friends before Christmas Eve.
在圣诞节前夜，人们忙着为亲朋好友买东西、包礼物。
The view was terrific.
景色美极了。
Talking with you is a pleasure.
和你谈话很愉快