从中提取的松香和鞣酸是化学工业上很需要的.The risin and tannin that can be extracted from it are sought by the chemical industry.从3点钟以后,它们就燃烧着松香.From three o'clock onward they would be burning resin.在实验室内用一 步法 合成了松香改性壬基酚醛树脂.Rosin modifi...
When you see the zodiacal light , you are looking edgewise view into our own solar system.几乎每年的这个时候我们都能够观测到黄道光(从北半球看).Having crashed on alien planet in a distant solar system, you find yourself in trouble.坠毁,机上有来自遥远星系的外星...
These hovercraft can easily outpace most boats.这些气垫船在速度上能轻而易举地超过大多数船只。Travelling at speeds of up to thirty five knots, these hovercraft can easily outpace most boats.这些气垫船行驶速度最高可达35节，能够轻易地超过大多数船只。In Latin America, popula...
There are a great number of Odoriferous fountains in Liupanshan Mountain area, south Ningxia.六盘山地区多处有臭水泉群出露.Historical traces everywhere obviously: Constantine Mungu sports arena, four river eruptive fountains, Spanish s...