我们所有的蔬菜均由当地菜农供应。All our vegetables are supplied by local growers.有个菜农在浇莴苣.An under - gardener was watering lettuces.菜农每隔约30公分种一颗大白菜.The vegetable farmers space out the Chinese cabbage about 30 cm apart....
匹配负载阻抗之传输线上无反射.No reflection will appear on a line with matched load.研究弱激光驻波场中的无反射势阱.The reflectionless potential well affected by a standing laser field is studied.光线被黑面吸收(而无反射).Light rays are absorbed by black surfaces...