小汽车撞到一辆停着的车上。The car collided with a stationary vehicle.他使劲踩剎车,险些撞上一辆停着的面包车.He braked hard and narrowly avoided a parked van.楼房前面停着一辆车.A car parked in front of the building....
研究人员还表示,在佩特里培养皿中的脑细胞前体可以发育成神经元.The researchers also showed that the progenitors mature into neurons in Petri dishes.植树细胞中丙氨酸和亮氨酸 、 缬氨酸的主要前体是丙酮酸.In plant cells the principal precursor of alanine , as well as leucine and v...