准备出国者均需注射伤寒预防针.Everyone who is going abroad will need to be immunised against typhoid.继而爆发了伤寒.An outbreak of typhoid followed.环境卫生搞不好,伤寒就会乘虚而入.Typhoid fever sneaks in when sanitation fails....
He had bowed out gracefully when his successor had been appointed.他在继任者被任命后体面地引退了。She loved the gracefully high ceiling, with its white-painted cornice.她喜欢这里高高的天花板，它造型优美，还带有一圈漆成白色的飞檐。She stepped gracefully onto the stage...
这也就是光源看起来为什么好象在搏动的原因.This is what makes the light look like it's pulsing.实验报道心肌细胞团自发性同步化搏动的一类新节律—整数倍节律.The present paper reports the integer multiple rhythms observed in spontaneously and synchronously beating cardi...
Only skeletons of buildings remained.只剩下了建筑物的框架。It looks like six skeletons in front of that stone door!在这石头门前看上去就象有六副骨骼!These two amino acids derive their carbon skeletons from pyruvate.这两个氨基酸从丙酮酸获得它们的碳架....