noun 下载 🔗分享 蓖麻毒素,蓖麻蛋白 An extremely toxic protein extracted from the castor bean. Examples : "Someone tried to poison the letter with ricin, a deadly substance found in castor beans. " 有人试图用蓖麻毒素给信件下毒,这是一种从蓖麻籽中提取的致命毒物。 compound substance chemistry biochemistry medicine biology plant weapon 与AI对话词汇游戏阅读练习