About twice the size of the previous record holder 这次发现的化石长度差不多是原纪录的两倍

　　The largest trilobite yet discovered has been identified by Canadian paleontologists.
　　The creature, which dates from 445 million years ago, measures 72 centimetres in length. This is about twice the size of the previous record holder.
　　Trilobites are an extinct group of sea-dwelling arthropods that are distantly related to crabs, scorpions and beetles.

古生物学家发现巨型三叶虫

　　加拿大古生物学家日前发掘出迄今最大的三叶虫化石。
　　这只生活在4亿4500万年前的三叶虫的化石长达72厘米，几乎是原先纪录的两倍。
　　三叶虫是一种早已灭绝的海生节肢动物，是螃蟹、蝎子与甲壳虫等动物的远亲。