Peter was dejected his confidence in tatters.彼得精神沮丧, 信心皆无。Peter was dejected,his confidence in tatters.彼得精神沮丧,信心皆无。Everywhere wallpaper hung in tatters.到处垂挂着破碎的壁纸。I was shocked to see him in tatters.见他衣衫褴褛, 我大吃一惊。...
Using a pestle and mortar, pulverise the bran to a coarse powder.用杵和臼，将麸皮磨成粗粉。He ground the rock candy with a mortar and pestle.他自己动手用研钵和杵把冰糖研成粉。The pellet with the poison's in the vessel with the pestle?带有毒药的小球放在带有...
Loteprednol etabonate was synthesized through oxidation, acylation, hydrolysis and chloromethylation from the starting material prednisolone.以泼尼松龙为原料,经氧化 、 酰化 、 水解成盐、氯甲基化成酯制得氯替泼诺.An enzyme that catalyzes the hydrolysis o...
His letter poses a number of puzzling questions.他的信中提出了许多令人困惑的问题。This poses a threat to agriculture and the food chain, and consequently to human health.这会对农业和食物链造成威胁，由此而危及人的健康。The high cost of oil poses serious problems...