Secondsry attack rate
[医] 二代发病率
🧩 词语组成解析
attack
[ə'tæk]
vt.& vi. 攻击，进攻，抨击;
n. 攻击;抨击;（队员等的）进攻;（疾病）侵袭;
vt. 抨击;非难;侵袭;损害;
rate
[reit]
n. 速度;比率;等级;（利息等的）费率;
vt. 估价;值得;责骂;定级;
vt.& vi. 认为，把…算作;
vi. 被评价;被认为;被列入;申斥;
🗣️ 情景例句
You'll never guess what I heard.
你永远也猜不到我听说了什么。
Don't they believe it's necessary?
他们难道不认为它是必要的吗？
quite apart from its significance as food, or from the literary idea that it will become a bird.
而完全不靠它的食用意义或它会变成鸟这样的文学概念来感觉。