南北线穿过时针和十二点的中间线.The north - south line ran midway between the hour hand and 12 o'clock.日方坚称以中间线划界.Japan claims its boundary as the median line.中间线: 在一行英文字里,沿着小写字母上端的一条假想线条.Mean line: Imaginary line which along the t...
组蛋白是一类结合在染色体上的蛋白质.Histones are a group of proteins that are associated with chromosomes.组蛋白是涉及到调控基因的蛋白质.Histones are proteins involved in regulating genes turned on and off.组蛋白的特点是大量的翻译后修饰,这些修饰可以影响基因转录.Histones are chara...
把磨刀石上的那把镰刀拿去.Take the sickle which is lying on the grindstone.Radianfullyconsistent最右边的一块是磨制石器的磨刀石.The right of a polished stone is the grindstone.古希腊人发明了冶铁术、风箱 、 磨刀石以及钥匙.The Greeks added welding iron , bellows, the lath...