grass 和 ground 有什么区别

grass 和 ground 有什么区别 weeds和grass有什么区别? over the ground和on the ground有什么区别 ground和GND有什么区别? grass 和 lawn 表示草坪有什么区别啊 earth,soil,land,ground有什么区别? earth,soil,land,ground有什么区别? bounce off the ground与bounce the ground有什么区别? protel99se中power ground,signal ground,earth有什么区别?数字地,模拟地又是什么? 电路中GND和GROUND 有什么区别,VCC,VDD,VEE,VSS呢又有什么区别然后这些V中又和DCpower有什么区别 snow covers the ground 和Snow covered the ground 有啥区别 land,floor,ground,earth,farmland,soil,field有什么区别 ground,earth,land这三个词有什么区别? fell on the ground、fell to the ground和fell onto the ground有什么不同?最好有例句, burn down to the ground 和burn down有什么区别吗?我怎么才能判断什么时候用哪一个呢? in the ground 和on the ground的区别 in the ground和on the ground的区别 I found the ground was covered with snow.和I found the ground covered with snow.有神马区别