Polyvinylene
聚乙烯撑, 聚次亚乙烯
🗣️ 情景例句
I hear the exams will be very tough.
我听说考试挺难的。
I'm afraid you will catch the Influenza.
我怕你会感染到流行性感冒。
Can you go through them and give me whatever you find?
你把它们仔细查阅一下并把凡是你能找到的东西给我好吗？