他的同学们正在绞尽脑汁地演算初等代数题.His classmates were labouring with elementary algebra.她专心致志地演算数学题.She was absorbed with the mathematical problem.因此, 采用多模式的控制演算法来克服此问题.Therefore, a multimode control algorithm is implemented to overco...
As the day darkened the streetlights came on.天色渐暗，街灯亮了。And it uses energy saving energy - saving streetlights.并且他使用的是节约能源的街灯.And it uses energy - saving streetlights.并使用节能路灯....
The aphid is now laying waste to the wheat and barley fields.蚜虫正在毁掉一片片的小麦和大麦田地。Since aphid population may become resistant to organophosphorus compounds, avoid excessive spraying.因为蚜虫类对有机磷化物能产生抗性, 所以要避免过多的喷洒.Aphid count ...
Kids nowadays love to eat junk food every day.现在的小孩每天都喜欢吃速食.How often do you eat junk food?你多久吃一次无营养食品?What kinds of junk food do you eat?你吃什么样的无营养食品?...