慢速英语:White House Press Briefing Room Cleared - Briefly

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1. check vt.检查，核对
例句：By what time should I check in?
我该什么时间办理登机手续呢？

2. improve vt.提高（土地、地产）的价值; 利用（机会）; 改善，改良
例句：She snatched at every chance to improve her marksmanship.
她抓住一切机会提高射击技术。

3. trillion n.万亿;兆
例句：By the end of 2000, that had ballooned to $2.5 trillion, with 72% in equities.
到2000年末时，投资额膨胀到2.5万亿美元，其中72％投资于股票。

4. investigator n.研究者; 调查者; 侦查员
例句：The investigator will be divided into three group.
所有的调查员将被分为三个小组。

5. suspect vt.猜疑（是）;怀疑
例句：I suspect that she is ill,but I'm not sure.
我猜想她病了，但不敢肯定。