Zeolon h
分子筛(含有H离子)
🗣️ 情景例句
Hi, Michelle.
嗨， Michelle。
People are always changing, aren't they?
人总是在变，不是吗？
later, we shall undergo a progressive loss of our vigour and resistance which, though imperceptible at first,
再迟一些，我们就要经历生命力和抵抗力逐步衰退的过程。虽然这个过程起初难以觉察，