Efa
abbr. essential fatty acids 必需的脂肪酸
??? 情景例句
No thanks. Maybe some other time.
不用了，謝謝。也許下次吧。
Let's cross the bridge when we come to it.
既來之，則安之。
We need to make a change on our last order.
上回的訂單我們需要更改。