substances
n. [物]物质；基本内容；物品药物（substance 的复数）
例句
Less dense substances move upwards to form a crust.
密度小的物质向上浮动并形成一层皮。
《牛津词典》
Most of these nourishing substances are in the yolk of the egg.
这些营养物质大部分在蛋黄里。
《柯林斯英汉双解大词典》
These are substances which specifically latch onto the protein on the cell membrane.
这些是专门黏附在细胞膜蛋白质上的物质。
