2. So I just assumed it had been filmed or videotaped. 所以我认为它已经被录下来了。
3. When the children were 2, researchers videotaped them at home in free-play sessions with both parents, recording all of their speech. 当孩子两岁时,研究人员将他们与父母在家里自由玩耍的过程录制下来,记录下他们所有的谈话。
4. They then videotaped the subjects as they slept. Lying in bed, eyes closed, one female patient on the tape performs the dance moves she learned earlier. 随后他们录下了实验对象睡觉的全程。录像中显示,一位女患者闭着眼睛躺在床上,做着她早些时候学过的舞蹈动作。
5. The researchers videotaped their efforts and graded their exams. 研究者们对他们解题的过程进行了录影,也对他们的试卷进行了评分。