Ept-
[医] 上, 在上, 在外
🧩 词语组成解析
[化] 三元乙丙橡胶; 乙丙三元橡胶
🗣️ 情景例句
About what?
关于什么
How many years have you been playing pingpong?
你打乒乓球多少年了？
Oh, good! He's coming down the ladder, now.
噢，好！现在他正从梯子上爬下来。