Pertussis 怎么读·什么意思·同义词是什么

📝 例句

The infant receives three injections of pertussis vaccine at one - month intervals.

婴儿以一个月为间隔,接受三次百日咳疫苗的注射.

tradition n. 传统;惯例;[宗]经外传说;[法]移交，引渡;

incentive n. 动机;刺激;诱因;鼓励; adj. 刺激性的;鼓励性质的;

medulla n. （拉丁语）骨髓;

intake n. 吸入，进气;（液体等）进入口;摄入，摄取;纳入（数）量;

scourge n. 天灾，灾难;鞭子;苦难的根源; vt. 鞭打;重惩，重责;使痛苦;严惩;

signify vt. 表示…的意思;意味;预示; vi. 具有重要性，要紧;辱骂;

cataract n. 大瀑布，急瀑布;[医]白内障;暴雨，洪水;奔流; v. 像瀑布似地注流;

hepatic adj. 肝脏的，治肝病的，肝脏色的;

I was very glad when the boys won the relay race.

我非常高兴，男同学在接力赛中获胜。

I've been here for about two years. I've been here since 1993.

我到这儿大约有两年时间了。我自1993年就到这儿学习。

Our knowledge of the universe is growing all the time.

我们对宇宙的认识一真在增长。

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