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
That's impossible.
不可能。
She began playing the violin when she was nine.
九岁的时候，她开始拉小提琴。
The show is supposed to be good.
这场表演应当是相当好的。