Many students have difficulty in delivering a speech in public, but they can overcome it through training.
很多学生觉得当众发表演讲很困难，但通过训练他们可以克服这一问题。
Most shallow aquifers in sand and gravel deposits produce lower yields, but they can be rapidly recharged.
"大多数沙石中较浅的蓄水层贮水量少，但可以迅速再生。
Heat islands develop best under particular conditions associated with light winds, but they can form almost any time.
在和风相关的特定条件下，热岛会形成最佳状态，但它们也几乎可以在任何时候形成。
None of these tricks will help you understand them, their positions or the issues that divide you, but they can help you win in one way.
这些技巧都不能帮助你们理解他们，理解他们的立场或让你们产生分歧的问题，但它们可以在某种程度上帮助你们获胜。
These friends-of-friends, people we might spend time with at social or work gatherings, might not be like us but they can still have a positive influence because we share the same sort of interests.
这些朋友的朋友，我们可能会一起进行社交或工作聚会的人，也许不像我们，但他们仍然会产生积极的影响，因为我们有相同的兴趣。
The covers are a small change, but they can still have a positive effect.
罩子只是一个微小的改变，但它们仍然可以带来积极的影响。
In fact, some spiders' webs are among the world's strongest materials, but they can be pulled longer than elastic.
事实上，有些蜘蛛网虽然是世界上最坚硬的材料之一，但是它们可以被拉得比橡皮筋还长。
Our nails are weaker than the nails that animals have, but they can keep our fingers safe.
我们的指甲比动物的指甲脆弱，但可以保护我们的手指安全。
For example, sunglasses are not just for fashion but they can also serve as a great way to protect your eyesight from ultraviolet rays.
例如，太阳镜不仅仅是为了时尚，也是保护视力免受紫外线伤害的好方法。
You see, the first "videophones"—that's what they're called—were made in Japan, but they can only show a still black and white image, so this videophone is much better than that.
你看，第一批被称作“可视电话”的设备是日本制造的，但它们只能显示静止的黑白图像，所以这款可视电话要比那款好得多。
But they can produce useable optical and infrared data.
但是它们可以提供可用的光学和红外数据。
But they can finance their deficit by selling existing US and European assets.
但是，他们可以通过出售现有的在美国和欧洲的资产来弥补其赤字。
There may be many problems, but they can be reduced principally to two points.
问题虽多，但归纳起来主要有两点。
Integration tests are the same, but they can invoke many HTTP requests back to back.
集成测试也一样，但它们能一个接一个的调用很多HTTP请求。
As we've learned, lines can be straight, but they can also be curvy and organic.
正如我们前面所学过的，线可直也可曲，也可以是有机的。
Won tons are usually boiled and served in soup, but they can also be deep-fried.
馄饨通常是煮好和汤一起吃的，但也可以油炸。
'the Qiang were badly hit by the earthquake, but they can survive that,' Mr. Dong says.
董仁威说，羌族在地震中遭受了严重的打击，但他们能挺住。
Transactions cannot span databases, but they can span schemas in the same database.
事务不可能跨数据库，但是可以跨越同一个数据库中的不同模式。
Most people are only too willing to help - but they can only do so if you allow them.
大多数人很愿意帮助你，但只有你同意时，他们才这样做。
But they can carry an awful lot of energy and they can accumulate energy very quickly.
但是，它们能携带可怕的大量的能量而且聚集能量很快。
Your friends might have great taste, but they can only, in the end, recommend what they like.
也许你的朋友比较有品味，但是他们最终推荐给你那些歌曲只是他们喜欢的。
Sometimes, he says, such editorial decisions are necessary, but they can be hard to make.
有时候，他说，这些编辑化的决定是必须的，但这也是很难去做出的。
But they can only perform this function in the ecosystem if they arrive at the right time.
但它们只有在正确时间出现的情况下才能发挥这一功能。
Tophi usually are not painful, but they can becomes swollen and tender during gout attacks.
结节瘤通常不痛，但是在痛风发作的时候会肿胀变脆！
But they can check whether we're already in their database; most restaurants and bars can't.
不过虽然他们可以查到我们是否已经已经在他们的数据库中，但这个大多数餐厅和酒吧可没法做到。
Human communities impose their own oughts, but they can vary radically from culture to culture.
人类共同体施加他们自己的“应当”，但是不同的文明之间有着根本的不同。
As I mentioned before, channels are by default non-buffering, but they can be made buffering as well.
正如我在前面提到的，通道在默认情况下是非缓冲的，但是也可以把它们变成缓冲的。
All mistakes are costly, but they can be worth the expense if they are used to inform and instruct.
所有的错误都会让人付出代价，但是如果人们引以为鉴，错误的代价也是值得的。
All mistakes are costly, but they can be worth the expense if they are used to inform and instruct.
所有的错误都会让人付出代价，但是如果人们引以为鉴，错误的代价也是值得的。
应用推荐