Marble, a metamorphic rock, forms when limestone re - crystallizes.大理岩, 变质岩, 形成时当石灰石重新结晶.Nitrosoguanidine crystallizes when the solution is cooled to 0℃.当萃取液冷却至0℃时,亚硝基胍结晶析出....a 19th century technique that actually cryst...
这就为前肠和中肠的邻接部分提供了神经.This innervate the adjacent region of the fore and middle intestine.粘液细胞分布于前肠的前段和排泄腔.The mucous cells lie in the anterior part of the foregut and cloaca....
他们艰苦的工作和不倦的勇气拯救了我们.Their toils and tireless courage were our salvation.从那时候起他变做世上最自谦, 最有礼貌, 最屡求不倦的求婚人了.From that time he was the most humble, modest, and importunate man alive in his courtship....