Only in this way can the critical mass of participation be reached.
只有这样才能凑足参加人数。
Just imagine! We have to finish reading 300 pages before Monday! How can the professor expect us to do it in such a short time?
想象一下！我们必须在星期一之前读完300页！教授怎么可以认为我们能在这么短的时间内做完呢？
So can the movement of aphids when, having depleted the young leaves on one food plant, their offspring then fly onward to a different host plant, with no one aphid ever returning to where it started.
蚜虫的运动也是如此，当吃完一株食用植物的幼叶，它们的后代会飞到另一株宿主植物上，没有蚜虫会再回到最初的地方。
Can the human race carry on expanding and growing the same way that it is now?
人类能够像现在这样继续发展和增长吗？
How can the Olympics change them?
奥运会将如何改变他们？
What can the tourists do there?
游客们可以在那里做什么？
How can the boy study Chinese?
这个男孩如何学习中文？
How can the man improve his article?
这个男人可以如何改进他的文章？
What can the chemistry in soap help us?
肥皂中的化学成分对我们有什么帮助？
Where can the visitors taste the best Italian food?
游客在哪里可以品尝到最好的意大利食物？
Where can the listeners find the speaker if they have questions?
如果听众有疑问的话，他们在哪里可以找到演讲者？
Can the middle school boy tell traditional Chinese stories in English?
这个初中生能用英语讲中国传统故事吗？
In some people's opinions, can the drones only be used by governments at any time?
有些人想，无人机在任何时候都只能被政府使用吗？
Not only can the art bring happiness to others, but it also shows that even cold, hard iron can be back to life with a little creativity.
艺术不仅可以给别人带来快乐，而且它还表明，即使是冰冷、坚硬的铁，也可以用一点创造力恢复生机。
How can the sleigh land if it doesn't snow?
如果不下雪的话，雪橇要怎么着地？
Only by working harder and harder can the future become happier!
只有努力、再努力，才能让将来更幸福！
Only when advanced countries extend a helping hand to developing countries, can the world be a better place.
只有当先进国家向发展中国家伸出援助之手时，世界才能变得更好。
Only by increasing the number of doctors by 50 percent can the patients be treated properly in this hospital.
只有把医生的人数增加百分之五十，病人才能在这家医院得到妥善的治疗。
How can the hormone adrenaline that does not act directly on the brain have a regulatory effect on brain function?
肾上腺素不直接作用于大脑，怎么会对大脑功能产生调节作用呢？
Only when it has been chewed up and digested almost to a liquid can the food pass through the rumen and on through the gut.
只有在食物被咀嚼并几乎消化到液态后，它才能通过瘤胃进入肠道。
The population problem cannot be solved in a technical way, any more than can the problem of winning the game of tick-tack-toe.
人口问题就像赢得比赛一样，不能通过技术手段来解决。
But can the stars reincarnate?
星星能转世吗？
But nor can the West be cowed.
但是西方也不能就此被吓倒。
How can the services be accessed?
如何访问服务？
Q: How can the standards be used?
问：如何使用标准？
是否可以提高该查询呢？
特性可以测试吗？
How can the mothers' lives be saved?
如何挽救母亲的生命？
Can the low-scoring brands stage a comeback?
那么这些低分品牌能重返榜单吗？
Can the low-scoring brands stage a comeback?
那么这些低分品牌能重返榜单吗？
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