31.The study demonstrates that the quality ofreaction accelerator can influence the density ofrefined copper.
31.研究表明,反應催化劑的質量影響精煉銅的密度。
32.It’s estimated that the claw hook of the cargocrane can’t heave the heavy lumber up.
32.據估計,該貨物起重機爪形鉤吊不起那些沉重的木材。
33.It’s inevitable that horrible earthquakes will happenin the margin of shifting earth layers.
33.移動著的地層邊緣將不可避免地發(fā)生重大的地震災害。
34.Steel rods that could reinforce concrete structuresare indispensable in constructing.
34.鋼筋可以加固混凝土結構,在建造過程中必不可少。
35.A scholar predicted that such festival decoration would be a typical feature (trait) of nextmagnificent ceremony.
35.一位學者預測,這種節(jié)日的裝飾是下次盛大慶典的典型特征。
36.The earth’s axis is an imaginative line between the north and south polar and the equatordivides the north and south hemisphere.
36.地球的軸心是介于南北極之間的那條假想的線;赤道是南北半球的分界線。
37.Sulfur dioxide is a toxic gas.
37.二氧化硫是有毒氣體。
38.It is absolute that the string of a piano vibrates when the keys are struck.
38.鋼琴的琴鍵一彈琴弦就想,這是再自然不過的事情了。
39.Emergence of the Internet is a grand symbol that mankind has access to a network era.
39.因特網的出現(xiàn)時人類進入網絡時代的重大標志。
40.The philosopher said that human behavior is mostly a product of learning, whereas the behaviorof an animal depends mainly on instinct.
40.那位哲學家說人類的行為主要是認知的產物,而動物的行為時本能的使然。