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 ...
我用一把大锤子把短桩打进地里。I used a sledgehammer to drive the pegs into the ground.第三锯贴近大枝,去掉短桩.The third cut is made close to the supporting limb to remove the stub.往 ( 短桩 ) 上投掷圆环, 如在掷铁蹄游戏中.Games To toss a ring over ( a peg ), as i...