Trained men, some of them veterinarians, in the employ of the government, make a thorough inspection of the glands and other organs of the hog. 佚名.神奇的知识之书.
It may be due to a condition of fulness of the vessels of the stomach, relieved by any stimulus which, acting on the lining membrane, induces a flow of fluid from the glands. 佚名.神奇的知识之书.
The mammary glands of the Ornithorhynchus may be considered, in comparison with the udders of a cow, as in a nascent condition. 查尔斯·达尔文.物种起源.