慢速英语:American Secretary of State Hillary Clinton Recovers From Health Scare at Home

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1.  She is currently taking medicine called blood thinners to break up the blood clot.

break up  驱散
例句：The police came in to break up the riots.
警察来驱散了骚动。

2. But she also made some calls on Saturday to a couple of foreign officials.

call on 号召
例句：The government call on the people to close ranks against the enemy.
政府号召人民联合起来反对敌人。
a couple of 两个， 几个
例句：I waited a couple of hours.
我等了几个小时。

3. He attended Yale University and served for a short time in Vietnam after he completed his studies.

for a short time 一会儿
例句：Why only for a short time?
为什么说只开了一会儿?