Ept
[化] 三元乙丙橡胶; 乙丙三元橡胶
🗣️ 情景例句
My mom is available to baby-sit this weekend.
我妈妈在这个周末可以照顾小宝宝。
I plan to go to the concert.
我打算去听音乐会。
'Certainly,' the girl said, 'but they're for next Wednesday's performance.
“当然可以，不过这两张票是下星期三的，