牙斑如果不清除就会导致牙齿蛀蚀和牙龈疾病。When not removed, plaque causes tooth decay and gum disease.莫妮卡拿起她的伯罗圆珠笔，放在牙齿间转动着。Monica picked up her Biro and revolved it between her teeth.它猛地朝我的脚脖子咬下去，牙齿还咔咔直响。His teeth clicked as he snapped at m...
反射的阳光可使这些城市节约用电.The reflected sunlight would allow these cities to save up electricity.他们可以观察月亮反射的光的光谱.They could look at the spectra of the light the moons reflected.电磁理论能够推算出反射的作用过程.Electromagnetic theory was able to p...
Starch grains present in the embryo sac and placenta are utilized by the embryo.存在于胚囊和胎座中的淀粉粒为胚胎所利用.What is dried human placenta, in the abdomen fetal?紫河车是什么, 腹中胎儿?A stalk connecting an ovule or a seed with the placenta....
The exultant crowds were dancing in the streets.欢欣的人群在大街上跳起了舞.The young gentleman uttered this exultant sound with mysterious significance.这位少爷发出这种兴高采烈的呼喊是带有神秘的意思的.He was exultant that she was still so much in his power....