例句與造句

1. sparks were emitted from small black boxes and red lamps flashed on and off angrily .
   黑色的小盒子放出火花，紅燈刺眼地忽亮忽滅。
2. fireflies flash on and off in the tall grass
   高高的草叢里，螢火蟲忽隱忽現(xiàn)。
3. sparks were emitted from small black boxes and red lamps flashed on and off angrily
   火花從小黑盒里迸出，霓虹燈怒火般閃爍其辭。
4. sparks were emitted from small black boxesand red lamps flashed on and off angrily
   小黑盒子里迸出火花，紅色燈泡發(fā)怒似地忽明忽暗。
5. i suggest to install a bulb above the door . when there is no one passing through, the bulb does not light; when there are people approaching, it will flash on and off; when there are people pass through, it will light up
   我建議在門上方裝一個燈泡，當無人通過時，他是關著的，當有人接近時，會一閃一閃的，當人從下方同下方通過時，燈泡會整個亮起來。
6. It's difficult to find flash on and off in a sentence. 用flash on and off造句挺難的