In colder weather, your cat will curl up into a tight, heat-conserving ball.天气更冷时，猫会为了保存热量而紧紧地缩成一团。A blow to the stomach made him curl up.他腹部受到一击而直不起腰来.On the battlefield such a coward like him would surely lie down and ...
其他蛋白质则渗透到脂质双层(膜)中,而且在某些情况下一直透过脂质双层(膜).Other proteins do penetrate into and, in some cases, all the way through the lipid bilayer.表面作用剂是指肺泡上的脂质分泌物.Surfactant is the name given to the lipid secretions that lie in the alveo...