Nccam
abbr. National Center for Complementary and Alternative Medicine 全国补药和选择性药物中心
🗣️ 情景例句
It's time we hired a secretary to answer the phones.
我们早就该请一个秘书接听电话了。
The brave man hazards his life, but not his conscience.
英雄的人可以冒生命危险，但不冒良心危险。
I am used to traveling by air and only on one occasion have I ever felt frightened.
我习惯了乘飞机旅行，只是有一次把我吓坏了。