停药后14d, 蕹菜上毒死蜱的残留量为 0.046mg. kg -1, 符合国际食品法典委员会标准规定.After 14 d, the final residues was 0.046 mg · kg - 1 , agreed with the safety qualitfication of Codex Alimentarius Commission ( CAC ) ....
这一方法给教学带来了活力，也使知识的吸收变得容易了。This technique brings life to instruction and eases assimilation of knowledge.他们认为古代希腊罗马是知识的重要发源地。They believed ancient Greece and Rome were vital sources of learning.他因对科学知识的通俗化而闻名世界。He became ...
People are sprawled on makeshift beds in the cafeteria.人们懒散地躺在食堂里搭起的临时床铺上。Does the college cafeteria provide a healthful diet?大学餐厅供应的膳食是否有益健康呢？In the cafeteria we serve ourselves.在自助餐馆我们是自己拿菜的....
Their sons, Ben and Jonathan, were three and six respectively.他们的儿子，本和乔纳森，分别是3岁和6岁。Jonathan Davies scored a penalty goal.乔纳森·戴维斯点球得分。Jonathan says it was his mistake.乔纳森说这是他的错。...
The National Health Service has visibly deteriorated, despite increased spending.尽管支出在增加，但国民医疗保健服务的质量却明显下降了。Grant's health steadily deteriorated.格兰特的健康状况持续恶化。Her health deteriorated rapidly, and she died shortly aft...