...tritium, a radioactive isotope of hydrogen.氢的放射性同位素氚Tritium is one of the mildest radioactive isotopes.氚是最和缓的放射性同位素之一.chemically inert radioactive waste不易发生化学反应的放射性废弃物People should keep away from the radioactive waste...
He attended his lectures and took copious notes.他去听他的课，做了大量的笔记。She took copious notes of the professor's lecture.上教授的课她记了大量的笔记.A copious rain began to fall.沛然降雨....
Mum and I used to fall out a lot.我和妈妈过去经常争吵。Some of the men were obliged to fall out from fatigue.一些人因疲乏而掉队了.In his sleep he let the book fall out of his hand.他睡着时书从手中掉了下来....
a consignment of goods一批托运的货物Methoxychlor consignment four major production companies, acetate cobalt, manganese acetate series of intermediate products.公司主要生产四氯苯醌 、 醋酸钴 、 醋酸锰等中间体系列产品.This last consignment of hosiery is ...