他被判处两年的苦役.He was sentenced to two years'hard labour.在丛林地带，儿童被用作开采金矿的苦役。The children were used as slave labour in gold mines in the jungle.该报告宣称，成千上万的人被军队逼迫做苦役。The report alleges that thousands of people have been fo...
This is a great drawing by one of the 19th century's finest draughtsmen.这幅恢宏画作出自一位19世纪最杰出的画家之手。Draughtsmen make drawing on a drawing board, a pencil a T - square , set square and scale.绘图员用铅笔 、 丁字尺、三角板和比例尺在绘图板上绘图....
这些试验的有效性已显得令人怀疑.The tests have been shown to be of dubious validity.他们正在检测这种草药作为杀菌剂的有效性.They're doing tests to evaluate the effectiveness of this herb as an antiseptic.蛋白质还可以作为检测实验治疗有效性的标识物.They can serve as markers...
The an emulsion of droplets between 100 and 300 nanometres ( billionths of a metre ) across.这些微粒仅宽100—300纳米 ( 一米的十亿分之一 ).That's still a few billionths of the fractional pressure changes your ear can detect.而这仍然只有你的耳...