婴儿在吮吸母亲的奶。
当刺激出现时，婴儿吮吸行为的变化被记录下来。
As stimuli were presented, changes in the infant's sucking behavior were recorded.
他们可能吮吸他们的大拇指，寻找毯子或者其他之类的。
1969年，研究者们首次将无营养吮吸次数的增加作为评估标准。
Increases in nonnutritive sucking were first used as an assessment measure by researchers in 1969.
如果这意味着市场预期僵尸银行四处游荡，吮吸经济活力，也完全OK的话，那我将非常难过。
I would be very sad if it meant that the market expects it'll be quite OK to have zombie banks roaming around, sucking the life out of the economy.
这个女人发现他们有相同之处，包括她们吮吸同一个手指的习惯，以及大学里学了相同的专业。
The women discovered they had things in common that included a habit of sucking on the same fingers and the same major in college.
通过吮吸铁杉幼嫩枝的汁液，树木的生长被毛茸茸的叶蝉阻碍，导致针叶从深绿色变为灰绿色，并提早掉落。
By sucking sap from the young twigs of the hemlock tree, tree growth is retarded by the woolly adelgid, causing needles to change color from deep green to grayish green and to drop prematurely.
吮吸次数的增加表明婴儿注意到或是喜爱眼前出现的物品。
Increases in the number of sucks were used as an indicator of the infant's attention to or preference for a given visual display.
他们能做的事情之一就是吮吸，这些婴儿听到法语时会去吮吸奶嘴。
One of the things they can do is suck, and these babies would suck on a pacifier when hearing French.
他们能做的事情之一就是吮吸，这些婴儿听到法语时会去吮吸奶嘴。
One of the things they can do is suck, and these babies would suck on a pacifier when hearing French.
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