The World Health Organization (WHO) says air pollution causes the death of seven million people a year and accounts for a third of fatalities from stroke, lung cancer and heart disease, with more than 90% of children breathing toxic air every day.参考翻译：世界卫生组织称空气污染每...
The tail of an animal, bird, or fish is the part extending beyond the end of its body.The wings of a bird orinsect are the two parts of its body that it uses for flying.the tail 和 the wings 在此是否表示类指，我个人认为是的。
...网上以讹传讹的版本：People have been
pouring into stadiums since the days of ancient Greece. In around 8 A.Q.,
the Romans built the Colosseum, which remains the world’s best known stadium are
continues to inform contemporary design. Rome’s
Colosseum was 157 feet tall and had 80 entranc...
The petty quarrels were a sad commentary on the state ofthe government.这些鸡毛蒜皮的争吵说明了政府的状况很糟糕。如何理解这句话？commentary: a criticism or discussion of sthsad: unacceptable, deserving blame or criticism
Using drugs，or
"doping" as it is called in sport, is one ofthe main problems
_____(face) the Olympics.为什么是现在分词作定语呀，face 和problem不是动宾关系吗，是因为表示正在进行的时态吗，正面临的问题？
... 是什么意思？附上下文:GOING POSITIVEI always wanted to look like the slim girls on TV
even though I knew that it was impossible. I worried about my weight and tried
every new diet I read about online. I tried no-fat, low-fat, 5:2, only bananas, no bananas—I
almost went bananas, too.Then ...
Apart
from the hostile influence of man, theorganic and inorganic world are, as I
have remarked, bound together by such mutual relations and adaptations as
secure, if not the absolute permanence and equilibrium of both, a long
continuance ofthe established conditions of each at any given time and ...
There are, however, many problems with this model.Significantly, though a few sites are quite impressive, there really is very little archaeological evidence to support it.Writing in 1982, Martin himself admitted the paucity of evidence;for example, at that point, the remains of only...
请教老师：It
is impossible to look for life on another planet using earth-based telescopes.
Our own warm atmosphere and the heat generated by the telescope would make it impossible to detect objects as small as planets. Even a telescope inorbit
round the earth, like the very successful Hubble ...
...【主要词义】[C]腹，腹部【典型例句】(1)指人的腹或腹部The doctor palpated his abdomen. 医生摸了摸他的腹部。He got jabbed inthe lower part of his
abdomen. 他的下腹部被人戳了。The main threat was still the bleeding inthe abdomen. 主要危险还是肚内流...
...e of some food or drink, you try a small amount of it inorder to see what the flavour is like.We have a taste ofthe white wine he's brought. 我们尝了尝他带来的白葡萄酒。 以上的a taste of 都表示“整体和部分”的关系，就是某食物的一小部分...
Culture shock is caused by the anxiety that results from losing all our familiar signs and symbols of social intercourse. Those signs or cues include the thousand and one ways with which we are familiar inthe situation of daily life. sign是标志的意思，symbol和cue是信号的意思吗？有...
A complex sentence is a group of words which expresses two or more unified thoughts, one of which is the mainor principal thought dependent on it one or more subordinate thoughts. 老师好！这里的dependent on it中的it是不是多余了？
Herdsmen and hunters have also long observed that grazing animals often tend to align themselves facing either north or south, which the researchers suspected was in readiness to escape in either of those directions should a threat emerge.请问：如何分析与理解粗体部分的从句呢？
...as some
terrible secret which has been concealed from strangers for years. The English
language possesses a vivid saying to describe this sort of situation. The
terrible secret is called 'a skeleton inthe cupboard'. At some dramatic moment
inthe story, the terrible secret becomes known and a reput...