Efa
abbr. essential fatty acids 必需的脂肪酸
🗣️ 情景例句
Sure. Would you please sign your name on the back, sir, with your passport number?
每问题。先生，请您在支票背后签上名字和护照号码。
You must not pledge your own health.
切不可把健康作孤注一掷。
How much cloth does it take to make a skirt for the girl?
女孩做一条裙子要用多少布？