8.现在分词与过去分词作定语
eg. In addition, changes made to the construction codes in Los Angeles during the last 20 years have strengthened the citys buildings and highways, making them more resistant to quakes.
The next test was more complex, requiring all to scan sequences of 20 identical letters and respond the instant one of the letters transformed into a different one.
A decade ago, adapting the infrared scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress.
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