Agent orange is a powerful defoliator.橙剂是一种强效落叶剂。The key pests and rat and pine moth, forest rats, defoliator of the poplars , bristletail.二是松毛虫 、 森林鼠害 、 杨树食叶害虫等常发性病虫害;三是小蠹虫 、 萧氏松茎象等钻蛀性害虫.Pineus armandicola Zhang is an i...
Papua New Guinea became independent from Australia in 1975.巴布亚新几内亚1975年脱离澳大利亚正式独立。Students in fifty schools are to act as guinea pigs for these new teaching methods.五十所学校的学生将作为这些新教学法的试验对象。" Guinea hens ,'said Archie...
这部相机有两个焦距.The camera has two focuses.比较贵的照相机有可调焦距.More expensive cameras have adjustable focusing.常见镜头的焦距 ( f ) 为625毫米.A typical lens has a focal length ( f ) of 625 mm....
I know how to darn, and how to sew a button on.我会打补丁，缝纽扣。The middle button of his uniform jacket was strained over his belly.制服上装中间的纽扣在他的肚子上绷得紧紧的。The autoexposure button is awkwardly placed under the lens release button....