Climbers can strap sharp nails on to help get a foothold on a slippery slope.登山运动员可以在靴子上捆上尖钉,这样有助于在很滑的陡坡上站住脚。The company is eager to gain a foothold in Europe.这家公司急于在欧洲取得一席之地。He found a secure foothold and pulled himself...
有些粮食作物歉收。但棉花的收成仍相当不错。Some of the food crops failed. However, the cotton did quite well.他们一直用小麦交换棉花和木材。They have been bartering wheat for cotton and timber.棉花价格始终保持坚挺，需求旺盛。Cotton prices remain firm and demand is strong....
Vast amounts of energy, from X-rays right through the spectrum down to radio waves, are escaping into space...大量的能量，从 X 光直到无线电电波，都正被泄露到太空中去。There are large amounts of aluminum silicate in the area.这个地区有大量的硅酸铝。If all the ...