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...
" Oh, God, " thought Scarlett drearily, " that's just the trouble." 啊, 上帝! "思嘉沮丧地想, " 难就难在这里呀.After a time he gave up waiting and drearily headed for the Madison car.过了一会儿,他放弃了等待,无精打采地到麦迪生大道坐街车.Everyone looked happi...