semicarbazido

例句：

1. 1.The protein is made up of amino acids, including cysteine.
   这个蛋白质由氨基酸组成，其中包括半胱氨酸。
2. 2.Cysteine is an essential amino acid for the body's growth and repair.
   半胱氨酸是身体生长和修复所必需的氨基酸。
3. 3. In the human body, cysteine is found in various tissues, such as the liver and kidneys.
   在人体中，半胱氨酸存在于肝脏和肾脏等组织中。