Ethyl heptanoate
[建] 庚酸乙酯
🧩 词语组成解析
[化] 乙基\\n[医] 乙基
🗣️ 情景例句
I had the appointment written on my calendar and was looking forward to the occasion.
我早已把这个约会写在我的日历上而且一直期待着这一时刻。
She finally began to get angry when Paul didn't arrive.
当保罗没有到达时，她终于开始生气了。
but ten months later, she received a letter from a girl in Holland.
但10个月以后，她收到了荷兰一位姑娘的来信。