nineteen [,naɪn'tin] 词频1

num. 十九;十九个;第十九; n. 十九岁;十九点钟;

💡 nine九+teen十 → 十九，十九个

"Draining mountains of everlasting snow, the river twists for nineteen hundred miles."

thirty ['θɝti] 词频1

n. 三十;三十个;三十年代;三十的记号; adj. 三十的，三十个的; num. 三十;三十个;

💡 thir=three三+ty十 → 三十

"There are thirty people in the classroom, counting the teacher."

sister ['sɪstɚ] 词频1

n. 姐妹;（称志同道合者）姐妹;修女;护士; adj. 姐妹般的;同类型的; v. 如姐妹般相待;

"Mr Darcy's affection for his sister"

近义：sibling, sis, nun, sisterly

born [bɔrn] 词频1 词根: /bə/

vt. bear的过去分词;支撑，支持;亲自携带，运输; vi. 结果，生产;和…有关; adj. 出生的，出身于…的;天生的，天赋的;

"Sam was born in the country and had a deep affinity with nature."

近义：inborn, inbred, inchoate, innate, congenital, connate

eight [et] 词频1

num. 八;八个;第八; n. 八;八人（或物）一组;八人划船队; adj. 八个的;

"The government's majority has been whittled down to eight."