271. Television violence has contributed directly to rising crime , as evidenced by statistics showing a dramatic rise in copycat crimes . 　　數據顯示模仿的犯罪行為有大幅度的增加，這證明電視暴力是犯罪增加的一部分直接原因。 　　272. The introduction of adcance agronomic techniques has contributed greatly to the development of agriculture , as indicated by statistics showing increased output in each of the past five years . 　　數據顯示在過去的五年中，每一年的產量都有提高，這表明發達的農業技術的引入對農業發展起到了很大的作用。 　　273. While it may appear that the gap between rich and poor people is narrowing somewhat , recently released evidence suggests that the opposite is true . 　　貧富之間的差距看似有一定的縮小，但是最近發布的證據表明事實正好相反。 　　274. While attaining world peace remains within the realm of possibility , the prevailing trend revolves around regional conflicts and internal strife in many countries . 　　獲得世界和平是有可能的，但是普遍的趨勢是存在地區沖突和許多國家內部的斗爭。 　　275. Although statistics are quite often far less reliable than one might wish , other reliable information allows one to closely approximate industrial output figures . 　　盡管數據經常比人們希望的不可靠得多，但是，其他可靠的信息使人們能得到接近工業產量的數字。 　　276. Although random sampling used for many surveys fails to cover large segments of the population , the procedure nonetheless offers insight into voting and consumption patterns . 　　雖然許多調查所用的隨機取樣不能覆蓋大部分人口，但是這一過程使人們能更深刻地理解選舉和消費的模式。 　　277. The need for more government services has proved to be the case time and again . 　　事實多次證明需要更多的政府服務工作。 　　278. The funny thing about marriage is that the newness soon wears off . 　　婚姻的一個可笑之處是新鮮感馬上就沒有了。 　　279. There are instances when one must abandon the tendency for self-prevention in order to assist a person in grave danger . 　　存在這樣的情況：為了幫助處于嚴重危險中的人，一個人必需拋棄自保的傾向。 　　280. There are situations in which its highly advisable for a person to control his/her temper and keep his/her mouth shut . 　　有些情況下，一個人控制住自己的脾氣并保持沉默是明智的。

　　271. Television violence has contributed directly to rising crime , as evidenced by statistics showing a dramatic rise in copycat crimes . 　　數據顯示模仿的犯罪行為有大幅度的增加，這證明電視暴力是犯罪增加的一部分直接原因。 　　272. The introduction of adcance agronomic techniques has contributed greatly to the development of agriculture , as indicated by statistics showing increased output in each of the past five years . 　　數據顯示在過去的五年中，每一年的產量都有提高，這表明發達的農業技術的引入對農業發展起到了很大的作用。 　　273. While it may appear that the gap between rich and poor people is narrowing somewhat , recently released evidence suggests that the opposite is true . 　　貧富之間的差距看似有一定的縮小，但是最近發布的證據表明事實正好相反。 　　274. While attaining world peace remains within the realm of possibility , the prevailing trend revolves around regional conflicts and internal strife in many countries . 　　獲得世界和平是有可能的，但是普遍的趨勢是存在地區沖突和許多國家內部的斗爭。 　　275. Although statistics are quite often far less reliable than one might wish , other reliable information allows one to closely approximate industrial output figures . 　　盡管數據經常比人們希望的不可靠得多，但是，其他可靠的信息使人們能得到接近工業產量的數字。 　　276. Although random sampling used for many surveys fails to cover large segments of the population , the procedure nonetheless offers insight into voting and consumption patterns . 　　雖然許多調查所用的隨機取樣不能覆蓋大部分人口，但是這一過程使人們能更深刻地理解選舉和消費的模式。 　　277. The need for more government services has proved to be the case time and again . 　　事實多次證明需要更多的政府服務工作。 　　278. The funny thing about marriage is that the newness soon wears off . 　　婚姻的一個可笑之處是新鮮感馬上就沒有了。 　　279. There are instances when one must abandon the tendency for self-prevention in order to assist a person in grave danger . 　　存在這樣的情況：為了幫助處于嚴重危險中的人，一個人必需拋棄自保的傾向。 　　280. There are situations in which its highly advisable for a person to control his/her temper and keep his/her mouth shut . 　　有些情況下，一個人控制住自己的脾氣并保持沉默是明智的。