She travelled 14,000 miles by sledge across Siberia to Kamchatka.她乘雪橇穿越西伯利亚到达了堪察加半岛，行程共1.4万英里。The sledge gained momentum as it ran down the hill.雪橇从山上下冲时的动力越来越大.Last week there was a quarrel during a sledge drive.上礼拜当雪车驶...
He is in charge of the procurement of materials.他负责物资的采购。More and more , human food procurement came to have a dominant effect on their evolution.人类获取食物愈来愈显著地影响到人类的进化.It was squarely up to me to decide whether or not the...
大自然最让人惊叹的是它的无限多样性。The most amazing thing about nature is its infinite variety.我们一点都不抵触多样化；实际上，我们需要多样性更丰富一些。We have nothing against diversity; indeed, we want more of it.自然环境保护主义者大多致力于保持物种的多样性。Conservationists are mostly ...