Macromineral
n. 常量礦物質；大量元素\\n
??? 情景例句
We will also need a letter of recommendation.
我們還要求一封推薦函。
You'd better see a doctor about that stomachache.
你胃痛最好去看醫生。
The Ambassador's wife went on asking questions, when she suddenly noticed a big hole in her husband's hat.
大使夫人繼續提出問題，她突然又發現丈夫的帽子上有個洞。