老鼠体内会产生一种叫做谷氨酸的特殊物质。
The mice produce a special thing named glutamic acid in their bodies.
选用维生素是因为他们控制了血液中一种叫高半胱氨酸的氨基酸的含量。
The vitamins were chosen because they control the amounts of an amino acid called homocysteine in the blood.
某些食品如果含有一种叫色氨酸的氨基酸，就会被认为是放松食品。
Some foods are considered relaxing foods if they contain an amino acid called tryptophan .
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