这些变化也是经济活跃和人口膨胀的指示器。
Such changes are also indicators of economic dynamism and demographic expansion.
他此后一直都活跃于该协会，后来还当了副会长。
He was to remain active in the association, latterly as vice president, for the rest of his life.
即使是在20世纪60年代，政治上活跃的学生和高校教师也是占少数。
Even in the 1960s, politically active students and academics were in a minority.
像猫，狗之类的动物是非常活跃的。
这种化学腺苷是脑细胞活跃时释放的。
The chemical adenosine is released by brain cells when those cells are active.
安德鲁的老师形容他温和、害羞、活跃。
端粒酶是一种只在活跃分裂的细胞中产生的酶。
Telomerase is an enzyme that is produced only in cells that are actively dividing.
人们特别注意到，在深度睡眠时，左脑更加活跃。
It was specifically observed that the left side of the brain was more active during deep sleep.
据新华社报道，该网站拥有超过2.7亿活跃用户。
It has more than 270 million active users, according to Xinhua.
这些基因在人们运动前禁食时比吃早餐时活跃得多。
These genes were much more active when the men had fasted before exercise than when they had breakfasted.
经理告诉我，杰克·格林过去几天在工场里非常活跃。
The manager told me that Jack Green's been very active around the shop the last few days.
它使土壤温度保持足够的温度，并让微生物保持活跃。
It allows the temperature of the soil to remain warm enough for microbes to remain active.
其他动物靠着像在冬天里保持活跃状态的这种方式而适应下来了。
Other animals adapt, for example by staying active in winter.
这篇文章可用来活跃学生的讨论。
The article can be used to stimulate discussion among students.
应该让这个班活跃起来。
几句笑话可给枯燥无味的演讲增添活跃的气氛。
参与暴力犯罪的活跃分子不会被自动地给予赦免。
Activists who were involved in crimes of violence will not automatically be granted amnesty.
佛罗里达是一个主张堕胎合法的活跃分子们的大本营。
宴会常常会因为妙趣横生的讲话而气氛活跃，热闹非凡。
The dinner was often a riotous affair enlivened by superbly witty speeches.
古板乏味的50年代被时髦活跃的60年代所取代。
他是我们这个时代最具活跃想像力的爵士乐钢琴演奏家之一。
He's one of the most dynamically imaginative jazz pianists of our time.
我将奖励最佳主意。说起好主意，这里就有一个，能活跃婚礼气氛。
I'll give a prize to the best idea. Talking of good ideas, here's one to break the ice at a wedding reception.
最活跃的用户在菲律宾。
我的同桌真的很活跃。
这个城市又活跃起来了。
他们发现，考拉在晚上很活跃。
马特是个非常积极活跃的人。
它也赋予我们能量，我们因此可以整日活跃。
从那以后，我变得更加活跃和外向。
那男孩的头脑似乎活跃起来了。
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