The process of diffusion would often be very slow, depending on climatal and geographical changes, on strange accidents . 分散的过程很缓慢，这取决于气候与地理的变迁，取决于意外的偶发事件。
But if the risks are properly understood and if preparation is meticulous, there are also opportunities . 但是，如果能正确地理解这些风险，如果准备工作做得周密，也还是有一些可资利用的机会的。
" country " is the most usual and neutral word for a geographical area identified by a name , such as france or china . “国家”是最普通的中性词，指通过名称识别的一个地理区域，例如法国和中国。
The problem is that the rainfall is not regular. it is not evenly distributed, either in time of year or geographically . 问题在于雨量不规则，无论从季节上讲或地理上讲，雨量的分布都是不均匀的。
The cline is considered the probable result of geographic trends in precipitation, temperature, and perhaps also photoperiod . 人们认为这种梯度变异可能是降水量，温度也许还有光周期等地理趋势造成的结果。
I am totally ignorant about the geography of these parts, and there is really nothing surprising about seeing an unfamiliar town . 由于我对些地方的地理一无所知，所以当我看到一个陌生的市镇时，也就不以为奇了。
Small amounts of geographic variation have been demonstrated in several other traits, such as cortical concentration of certain monoterpene . 在其他几个性状上，亦经证明有少量地理变异，诸如皮部的某些单萜烯浓度。
What we grasped only with reluctance-and many at home never understood-is that heroes are such because of monomaniacal determination . 我们很不情愿地理解到--而国内许多人始终不理解--英雄之成为英雄是因为他们具有偏执狂般的决心。
It is obviously a very attractive method where stringent effluent regulations are in force; and geographical, climatic and land conditions are favorable . 在实施严格的排水管理规则，而地理、气候和土地条件又合适的地方，显然它是一个很有吸引力的方法。
Sir c.lyell in a striking passage has speculated in language almost identical with mine, on the effects of great alterations of climate throughout the world on geological distribution . 莱伊尔曾在一段动人的文章内，用和我几乎相同的说法推测了全球气候的大变动对于地理分布所起的影响。
