1·At night, the pupils dilate to allow in more light.
晚上，瞳孔放大以便让更多的光线射入。
—— 《柯林斯英汉双解大词典》
2·Pupils dilate, palms become sweaty and the heart rate increases.
瞳孔放大，手心出汗。心率加快。
3·Your pupils dilate, your blood pressure rises, as a response your livers dumps more sugar into your bloodstream.
你的瞳孔变大，血压上升，进而你的肝脏运输了更多的糖分到血液中。
4·Sometimes, I feel I need to dilate my pupils to remain attentive.
有时，我觉得需要扩大瞳孔才能精神集中。
5·For instance, the pupils of women and infants (but not men) spontaneously dilate when they see babies. Pupil dilation is an honest indicator of interest and attraction.
一种解释是，当一个人面对她所喜爱的东西的时候，她的瞳孔会自然扩张，例如，女人和幼儿（没有男人）在看到婴儿时，她们的瞳孔会自动放大。
6·During the Renaissance period, women applied an extract of the belladonna plant to their eyes to dilate their pupils and give a wide-eyed, beautiful appearance.
在文艺复兴时期，女人们会用莨宕植物的提取液来护理眼睛，它有扩大瞳孔的功效，能让女人看上去眼镜更加细长，外表更加漂亮。
7·It has been observed to cause the pupils to dilate, increase blood pressure, and increase the heart rate.
它也可能引起瞳孔膨胀，血压增高和心率不齐。
8·An adrenergic drug, C9H13NO2, that is a powerful vasoconstrictor and is used to relieve nasal congestion, dilate the pupils, and maintain blood pressure during anesthesia.
肾上腺素一种肾上腺素的药剂，c9h 13 no2，它是一种很强的血管收缩剂，可用于麻醉过程中减轻鼻充血、扩大瞳孔和稳定血压。
9·For instance, the pupils of women and infants (but not men) spontaneously dilate when they see babies.
比如，女性和婴儿(不是男性)的瞳孔会当在看到婴儿的时候自觉地放大。
10·It's necessary to dilate the pupils for the eyetest . In this way we can get the exact dioptre.
医生：验光需要放大瞳孔，这样我们可以得到准确的屈光度。 %。