Andrew traversed the prairie on horseback.安德鲁骑马穿越大草原.He farmed 2500 acres of Nebraska prairie.他耕种了2500英亩的内布拉斯加州大草原.A single spark can start a prairie fire.星星之火,可以燎原....
Asymmetric 1, 3 - dipolar cycloaddition can be strongly catalyzed by chiral oxazaborolidines.手性唑硼烷酮能够催化不对称1, 3偶极加成反应并取得很好的效果.The cycloaddition itself is the slow step.环化作用本身是慢的一步....
She'smuch happier performing live than in a recording studio.与在录音棚里录音相比，她更喜欢现场表演。Gliders equipped with radio and recording instruments have been flown into the core of thunderstorms.装有无线电设备和记录仪的滑翔机曾飞进雷暴的中心.The recor...
请保持地方清洁, 并于使用后把所有废物带离中心.Please keep the place clean, and throw away any garbage.椭圆越扁平,两焦点之间的距离越远,每个焦点离中心的距离也越远.The flatter the ellipse the farther apart the foci and the farther each focus the center....