This substance has now been cloned by molecular biologists.该物质现在已被分子生物学家克隆。Syria will attend only if the negotiations deal with issues of substance.只有在谈判涉及重大问题时叙利亚才会参加。There is no substance in any of these allegations.这些...
The basic substance Willis selected for the strata of his experiments was beeswax.威利斯在他做的试验中选择摸拟地层基本物质是石蜡.The titanium ascorbate was the substance of low toxicity to fish, shellfishand anura.抗坏血酸钛对鱼类 、 类及无尾两栖类皆为低毒物质.musi...