He is less active than Matt, but he has a really close group of friends.
他不如马特活跃，但有一群非常亲密的朋友。
First, animals in colder climates are less active, often resting or hibernating to conserve energy.
首先，生活在较冷气候中的动物活跃性较差，经常通过休息或冬眠来保存能量。
Moreover, both the less active and the more active gene types came from a small number of functional groups.
而且，无论是活力较高的基因还是活力较低的基因都来自少数功能群。
Astronomers might want to focus more on older, less active stars or search for planets with their own magnetic fields, she says.
天文学家可能想更多地关注更古老的、又不太活跃的星体或者寻找拥有它们自己磁场的行星，她说。
Research that girls are far less active than boys is worrying, she argues.
她说，调查表明，女孩们远不如男孩们活跃，这是很令人担心的。
Many of us believe that a person's mind becomes less active as he grows older.
我们很多人都认为，一个人智力会因衰老而变得迟钝。
Because seniors tend to be less active, they require fewer calories. Medications can also dampen appetite.
由于老年人往往不够活跃，他们需要的热量也较少。而药物也能起到抑制食欲的作用。
One unexpected finding: When the patient repeated words, the facial motor cortex was most active and Wernicke's area was less active.
有个意想不到的发现：当患者重复单词时，面部运动皮层最为活跃、威尼克区活跃度则相当低。
The front part of the brain is much less active; this is the center of our higher level thinking processes like organization and memory.
而前脑部分却更不活跃，这里是我们进行组织和记忆等更高层次思维过程的中心。
In the cases where the older person's mind really seems to become less active, it is not necessarily a sign of becoming less active due to old age.
在某些情况下，老人的思维确实显得不如从前那么活跃了，但这不一定就是因年老而思维变得不活跃的标志。
Scientists asked volunteers to gorge on fast food and be less active for four weeks, expecting them to put on weight but then return to their normal size.
科学家们要求志愿者们在四周的时间里拚命食用快餐，并降低活动量，希望他们增加体重，然后再重新回到正常的体型。
Gaseous NF3 containing 0.1% or less active fluorides (calculated as HF) was found to be noncorrosive toward several different parent and welded metal specimens.
含有0.1%或更少的活泼氟化物(认为是HF)的气态NF 3被发现对于几种不同的母材和焊接金属试验品是没有腐蚀性的。
Then, when clock cells are less active, sensory cells can easily instruct secretory cells to release vasopressin, ensuring that the body holds on to its water reserves.
相反，当生物钟细胞激活水平比较弱时，感觉细胞能够更容易地指示分泌细胞释放抗利尿激素，以保证身体在睡眠时保持足够的蓄水量。
Researchers also discovered that the dorsal anterior cingulate cortex, an area responsible for stress response, was less active when the women were looking at the photos of their other halves.
研究人员还发现，在女性观看爱人的照片时，她们大脑中对于压力做出反应的区域的活动也减少了。
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