Polyhexamethylene formal
[化] 聚亞己基縮甲醛
?? 詞語組成解析
formal
['f?:m?l]
adj. （學校教育或培訓）正規的;方式上的;禮儀上的;
n. <美>須穿禮服的社交集會;<口>夜禮服;
??? 情景例句
You should have seen the look on his face
真該看看他臉上的表情
After dinner sit awhile, after supper walk a mile.
正餐以后，休息片刻；晚餐以后，步行一哩。
No! You don't understand! Not before or after meals--instead of them.
“不是，你沒聽懂！不是飯前或飯后吃--而是代替三餐飯?！?/div>
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