I'm just going to cut the grass.我正打算去修剪草坪。The cat was crouching in the grass, waiting for the bird.这只猫蹲伏在草丛里, 等着捉那只鸟.The force of the wind tests the strength of the grass.疾风知劲草。I'm going to cut the grass.我要去修剪草...
I let the horse drop his head to crop the spring grass.我让马低下头啃吃春天的青草。The windows overlooked a lawn of tall waving grass.窗户外边是一块草地，高高的草随风摇摆。Their four children turn cartwheels in the grass as we talk.我们说话的时候，他们家的4个孩子在草地上玩...
以 4- 硝基查耳酮为原料的反应,其产物可获得最高达96%ee值.Up to 96 % ee was achieved with 4 - nitro - chalcone as enone substrate.查耳酮类化合物是合成黄酮类化合物重要的中间体, 具有重要的药理作用.Chalcon is an important intermediate for synthesizing flavone, and has variety of...
降雨量和降雪量共达50毫米。The total rain and snowfall amounted to 50mm.我国这个地区每年的平均降雪量为20英寸.Snowfall averages out in this part of the country at twenty inches a year.今年的降雪量低于平均水平.The amount of snow this year has been below average....