The position of the circulation center relative to a deep convective cloud cluster is associated with the upper tropospheric environmental flow.

这种环流中心与云团的相对位置关系和对流层上部的环境流场密切相关。

youdao

On the east side of bda is the international container transit station and with the Beijing international goods circulation center, customs house, commodity inspection bureau on the north side.

开发区东侧有国际集装箱中转站，北邻北京国际物流中心及海关商检等机构，区内将设保税仓库等功能全的外向型经济配套设施。

youdao

Its metaphor makes West Superior ‘the center of cardiac or heart circulation’; the railways become major arteries; and New York is ‘the umbilicus through which this man of commerce was developed’.

“根据地图的十分形象的比喻， 西史匹瑞亚 是“整个心脏血液循环的中心”，铁道系统是大动脉，纽约是“商业之子起源的脐带”。”

youdao

And this is one thing that Director Bill Reed was trying to get people not to focus just on the center of circulation or on the coast.

WHITEHOUSE: Press Briefing

Translating medical research into practice is never easy, but Dr. Ben Abella, a co-author on the Circulation paper and the clinical research director of the Center for Resuscitation Science, says that hypothermia is an especially hard pill for some to swallow.

CNN: Cooling is catching on for cardiac arrest patients

The time it took for ambulances to arrive on the scene was similar for men and women, according to researchers at the Institute for Clinical Research and Health Policy Studies at Tufts Medical Center in Boston, Massachusetts, who published the study in the journal, Circulation: Cardiovascular Quality and Outcomes.

CNN: Five ways to get ambulance workers to take you seriously