请帮我把以下这段话翻译成英文： 正常乳腺发育过程和乳腺癌进展当中的细胞行为就像物体和其镜像的关系看上去相似但本质却完全不同。蛋白的糖基化修饰在乳腺发育和乳腺癌进展中都扮演者重要的角色。同样在这两个过程中都起到关键作用的糖蛋白由于其糖基化的类型和水平差异会影响乳腺细胞的正常分化发育状态甚至引起它们的恶性变化或者加快了乳腺癌发展进程。因此系统的分析乳腺组织中关键糖蛋白的生物学功能并对其相关的糖基化修饰

The cellular behavior during the normal development of the mammary gland and the progression of breast cancer is like the relationship between an object and its mirror image - they may appear similar, but their essence is completely different. Glycosylation modification of proteins plays an important role in both mammary gland development and breast cancer progression. Glycoproteins that play a key role in both processes can affect the normal differentiation and development of mammary cells, and even cause malignant transformation or accelerate the development of breast cancer due to differences in the type and level of glycosylation. Therefore, a systematic analysis of the biological functions of key glycoproteins in mammary tissue, and a review of their related glycosylation modifications, will help people to better understand the similarities in cellular biology and the molecular level differences between mammary gland development and breast cancer progression. Additionally, this review can interpret the molecular interplay and signal transduction in mammary gland development and breast cancer progression from a glycobiological perspective, laying the foundation for elucidating the key molecular mechanisms underlying breast cancer occurrence and development.