A case of acral amelanotic melanoma is reported.报告1例肢端无色素性黑素瘤.Objective : To isolate and culture hair outer root sheath amelanotic melanocyte derived from human scalp.目的从人头皮毛囊外根鞘分离纯化培养无色素黑素细胞....
He suspects there's a conspiracy to cover up the crime.他怀疑有人密谋掩盖犯罪事实。His behaviour is an attempt to cover up his insecurities.他的行为是想掩饰自己的不自信。The police investigation was a joke. A total cover-up.警方的调查简直荒唐可笑，完全是在掩盖真相...
这一聚合物的性质目前是个商业机密。The nature of the polymer is currently a trade secret.聚合物及类似材料的价格会下降。The prices of polymers and suchlike materials will decrease.接著我们致力于找出能够减弱辐射的聚合物.Then we got involved with trying to find polymers that...
所有狗看到食物都会流口水。Any dog will salivate when presented with food.我的狗一见到这块肉就开始流口水.At the sight of the meat my dog started drooling.从厨房传来的气味使他流口水.The smell from the kitchen made his mouth water....