Calculating who should perish involves pitting more lives against less, young against old, professionals against the homeless, pregnant women against athletes, humans against pets.
2
补充怀孕哺乳期宠物对钙的特殊需求，预防产后瘫痪等骨骼疾病的发生。
Supplementing the special calcium requirements, and preventing the occurrence of milk fever in pregnant and lactating bitches.
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