趋势跟踪者总是等待市场波动，然后他们跟踪市场。
Trend followers always wait for a market to move; then they follow it.
在志愿者观察照片时，他用红外线摄像头跟踪他们的眼球，然后要求志愿者对照片的吸引力评分。
He then asked them to rate the image for attractiveness and while they studied the photos used infra-red cameras to track their eyes.
研究员们对545000个，年龄在50 - 71岁的人进行了测试，调查他们的饮食习惯，然后跟踪调查他们10年后，发现有超过70000的人在这段时间死去。
The researchers surveyed more than 545, 000 people, ages 50 to 71 years old, on their eating habits, then followed them for 10 years. There were more than 70, 000 deaths during that time.
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