Dienite
丁烯均聚物
🗣️ 情景例句
She was still beautiful at the age of forty.
她活到四十岁仍然很美。
Judge not of men and things at first sight.
审人论事宜谨慎，一见之下莫断定。
Which TV programme shall we watch? I can't decide.
我们看哪个电视节目呢？我拿不定主意。