(分析利弊)常言道：“事物總是一分為二的”。如今人們從科技發(fā)明中得到越來越多的好處。另一方面，科技進(jìn)步也給我們帶來了許多麻煩�，F(xiàn)在許多國家的人民飽嘗公害之苦。
As a popular saying goes, "Everything has two sides." Now people (the public)are benefiting more and more from scientific and technological inventions. On the other hand,the progress of science and technology is bringing us a lot of trouble. People in many countries are srffering from public hazards.
6. For example, ...（舉例闡述）For instance, ...Let's take ...for examlpe.
就拿汽車為例。汽車不僅污染城市空氣，而且使城市擁擠不堪。此外，汽車造成許多交通事故。汽車所產(chǎn)生的噪音使居住在街道兩旁的居民日夜不得安寧。
Let's take cars for example.They not only pollute the air in cities,but make them crowed.Furthermore,they carse a lot of traffic accidents. (..., they are responsible for a lot of traffic accidents.) The noise made by cars disturbs the residents living on both sides of streets all day and night.
