n.要件；概要
"The room was furnished with the simplest essentials, a bed, a chair, and a table." ＂房間里只布置了最簡單的必需品，一張床、一把椅子和一張桌子。＂
In considering this problem, you should grasp its essentials. 在考慮這一問題時，你應(yīng)當(dāng)抓住實質(zhì)。
非必需品
