Peel a thick-skinned orange and square off the ends with a sharp knife.剥开一只厚皮橙子，用锋利的刀将两端削去使它呈方形。Therefore, TRF 2 may protect chromosome ends by maintaining the correct structure at telomere termini.因此, TRF2可保护染色体末端保持正确的结...
一家工厂产生的需求使得必须再建造一家工厂。The demand generated by one factory required the construction of another.这一古板的老旧机构拒绝承认人们对流行音乐的需求。The fusty old establishment refused to recognise the demand for popular music.有一些廉价的商品，但是数量不足以满足需求。Che...