益生菌是一类对宿主有益的活性微生物,是定植于人体肠道、生殖系统内,能产生清楚身体健康功效从而提高宿主微生态平衡、充分发挥有益起到的活性有益微生物的总称。...
Airbus has announced that carriers will be able to choose from a range of sleeper compartment configurations in the holds of A330 aircraft by 2020 -- ...