After airplane invention, the airplane becomes the modern civilization essential carrier day by day. Compares with other transportation vehicle, the airplane has many merits:
(1) speed is quick. At present jet airliner's cruise speed about 900 kilometers each hour. (2) mobility is high. Airplane flight not mountain, rivers, desert, sea impediment, moreover may according to the guest, source of goods quantity momentarily increase the school grade order. (3) safe comfortable. According to International civil aviation organization statistics, commercial aviation average every hundred million guests male - (in) - the casualty is 0.04 person, is the ordinary transportation way accidental death population several dozens 1 to several 1%, juxtaposes with the railway transportation for the safest transportation way. Certainly, the airplane to the humanity the influence is two-sided, just like - - “the science and technology is a double-edged sword”.
1, we face the difficulty is the population which needs to help are too many. (be faced with) 2, sacrificed many lives only then to trade this fight the victory. (at the cost of) 3, we do not let these details tow us. (get bogged down) 4, I plan to trade the work, but when has the appropriate opportunity. (bide one's time) 5, as a result of the family pressure, their that not content marriage continues preserve. (drag on) 6, this question raise suddenly, she cannot find out the answer unexpectedly for a while. (catch sb off guard)