水箱和屋顶都需要敷设严密的保温层。Water tanks should be well lagged and the roof well insulated.从防守高度严密的监狱的集体越狱a mass breakout from a top security prison他那论证的精确严密the nicety of his argument...
他们便站在浓荫的榛树下.They were standing in the shade of hazel bushes.榛睡鼠从10月冬眠到5月。Dormice hibernate from October to May.乡鼠正坐在榛树丛下摘硬果.The Country Mouse was sitting under a hazel thicket plucking nuts....
All slanders and libels should be repudiated.一切诬蔑不实之词,应予推倒.They want to run those rumours and slanders back to their sources.他们想要追查那些流言蜚语的根源。He doesn't care about scandals, slanders , calumnies , aspersions , or def...
Aspirin is synthesized through O - acylating reaction from acid and anhydride acid with anhydrous carbonate as catalyst.以水杨酸和乙酸酐为原料,采用无水碳酸钠作为催化剂经O - 酰化反应合成了阿司匹林.In 2002, we develop Photo - catalyst & electronic Ionizer A...