scale trace

To trace their evolution, the researchers made a large-scale comparison of elephants to other mammal species-including extinct relatives like woolly mammoths and mastodons whose DNA remains in their fossils.

为了追溯它们的演化过程，研究人员对大象和其他哺乳动物（包括猛犸象和乳齿象等虽然已经灭绝，但DNA在化石中得到保存的现代象的“亲戚们”）的基因组进行了大规模的比对。

On a much longer time scale, genetic methods are being used to trace human migratory patterns and to determine biogeographical and ethnic origin.

在一份更长的时间表，基因方法使用追踪人迁移样式和确定生物地理和种族起源。

Tomato ( Lycopersicon esculentum. Mill) is an important economic crop, rich in vitamin C and trace elements, with high nutritional value and large-scale cultivation in China.

番茄（Lycopersicon esculentum.Mill）是一种重要的经济作物，富含维生素C和多种微量元素，营养价值很高，在我国大面积栽培。

The powerhouse was trace out accurately later on a large scale map.

后来发电站被精确地描画在大比例地图上.

At present, a large-scale used biomedical magnesium alloys mainly include AZ31 、 WE43 etc. However, the Al element may cause dialysis encephalopathy syndrome, alzheimer s disease and other degenerative neurological diseases, which is considered as a non-essential trace element of low toxicity.

目前大规模使用的生物医用材料镁合金有AZ31、WE43等。Al可能引起透析性脑病综合征、老年性痴呆等一些退行性神经疾病，被认为是一种非必需性的低毒微量元素。