The meat then was heated for five minutes on each side at a temperature of more than 200 degrees Celsius. The researchers also cooked steaks marinated without spices, and s...
5. look at sb. do sth. 看着某人做了某事 I looked at him do his homework just now. 刚才,我看着他做了他的作业。 6. hear sb. do sth. 听到某人做了某事 I heard him sing an English song half an hour ago. 半个小时前,我听到他唱了一首英文歌曲。
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