Through lots of research, Cress found out that Americans use about 500 million straws every day.
通过大量的研究,Cress 发现美国人每天使用大约5亿根吸管。
Houses built before 1939 use about 50% more energy per square foot than those built after 2000, mainly due to the tiny cracks and gaps that expand over time and let in more outside air.
1939年以前建造的房屋每平方英尺消耗的能源比2000年以后建造的房屋多50%,这主要是由于微小的裂缝随着时间的推移而扩大,更多的外部空气进入了裂缝。
In my case I want to use about 3 pixels of feather.
在这里,我使用了3个像素的羽化。
He says his team's research is influenced by questions in evolutionary biology about why people and groups use costly punishment.
VOA: special.2009.03.03
What was neat about it is before that time, the predominant species to use for air conditioning or refrigeration was ammonia.
在这之前是很整洁的,之前最主要的用于空调或者冰箱的,物质是氨。
Use this pattern whenever you want to find out about the timing of an event in the past, present, or future.
当你想知道过去、现在或者未来某件事发生的时间时,你都可以使用这个句型。
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