Epdm
[化] 三元乙丙橡胶; 乙丙三元橡胶
🗣️ 情景例句
Listen, Richard,doing aerobics for an hour is a lot different than lifting weights.
听着， Richard，一小时的有氧运动可与举重大不相同。
He falls down the stairs.
他从楼梯摔了下来。
I'll go to that shop and see if they have a telephone.
我去那个商店，看看是否有电话。