A knife is sharpened on the grindstone; steel is tempered in fire.刀在石上磨, 钢在火中炼.A knife is sharpened on the grindstone;steel is tempered in fire.刀在石上磨,钢在火中炼。He sharpened the edge of his knife on a grindstone.他在磨石上磨快了他的刀刃....
Tachycardia may result from pain, apprehension, hypoventilation, or hypovolemia.心动过速可由于疼痛 、 恐惧 、 通气不足或低血容量引起.Methods: The animals achieved hypercapnic acidosis with mechanical hypoventilation before ischemia - reperfusio...
The delta region of the Rio Grande river was a forsaken land of thickets and swamps.里奥格兰德河三角洲曾是一片遍布荆棘和沼泽的荒废之地。Small trees became thinly scattered among less dense thickets.小树稀稀朗朗地立在树林里.The entire surface is covered with ...
一些研究人员和研究实验室对他们的研究在这一点上还是很确信的.A number of researchers and research laboratories have shown confidence in it for their studies.“明天早上之前我们在这里是安全的, ”内森确信的说.We'll be safe in here till morning, assured Nathan.上帝赋予我们梦想的天资,...