...the skills you will use to paddle the canoe.划独木舟要用到的技术The explorers paddled their canoe cautiously upstream.探险者们谨慎地把独木舟向上游划去.A canoe made by hollowing out a tree trunk; a dugout.独木舟将树干中心挖空制成的独木舟; 独木舟.He paddled the ca...
Benson signaled the auctioneer quietly and kicked the bid up another thousand dollars.本森悄悄地向拍卖人做了个手势,然后把出价又抬高了1000美元.She spoke in a quietly melodious voice.她说话轻声细语，嗓音甜美。It was raining quietly and steadily and there were ...
以正庚醛 、 硫代硫酸钠和溴代正丁烷为原料,合成了正庚醛正丁硫醇缩醛.The heptanal butyl mercaptan was synthesized with heptanal, sodium thiosulfate and 1 bromobutane as raw materials.目的研究以庚醛和原甲酸三乙酯为原料制备庚醛二乙缩醛的工艺条件.Aim Enanthal diethyl acetal is prepared ...