布莱克很熟练地跳上了船，他的重量使小船微微向下沉了沉。Blake jumped in expertly; the boat dipped slightly under his weight.即使重量仅有1克的二十分之几都可能是关键性的。A few twentieths of a gram can be critical.我学会了如何称出袋装种子的重量。I learned how to weigh out packages of seed...
大象的尾巴像粗绳.The tail of elephant looks like a thick rope.小老鼠注意到有一段粗绳紧扣住整个网子.He noticed the thick rope that held the together.我们用粗绳把所有包裹捆扎妥当.We tied up both package well with heavy cord....
明亮的流星，或者说陨石，是番难忘的景象。A bright shooting star, or meteor, is an unforgettable sight.我们目睹了一家人正在收拾家当准备离开的凄惨景象。We encountered the pathetic sight of a family packing up its home.庞大的海鸟群是最壮观的景象之一。Among the most spectacular sights...
Differential scanning calorimetry ( DSC ) determination of purity of chlorotoluron.研究了用差示扫描量热法(DSC ) 测定绿麦隆的纯度.To be familiar with the mechanism of indirect calorimetry.熟悉间接测热法的原理.The OPPLC was conformed by differential s...