Pneumococci
肺炎双球菌
🗣️ 情景例句
For example, did you know that 1 in 4 teenagers has tried marijuana?
比如，你是否知道4个青少年中就有1位曾经吸过大麻？
May I help you?
要我帮忙吗？
I'm sorry, but I don't really have much choice.
对不起，我实在没有什么选择余地。