叙述了PEN及其中间体2, 6- 萘二甲酸的发展情况.
来源:互联网摘选Excitedly he put pen to paper, ripping a hole in it with a slight tearing sound.
他激动地把笔按向纸张, 纸嗤地撕破了.
来源:互联网摘选All the evidence would have to be assembled before he could put pen to paper.
动笔前他得先把证据收集起来.
来源:互联网摘选Even the modestly educated sought an elevated tone put pen to paper before the 1960 s.
1960年以前,甚至(那些)受过普通教育的人在下笔前都会寻求一种高雅的腔调.
来源:互联网摘选Some authors make through mental preparation , before they put pen to paper.
有些作者在动笔前完全打好了腹稿.
来源:互联网摘选Some authors make thorough mental preparation before they put pen to paper.
有些作者在下笔之前已经完全打好了腹稿.
来源:词典精选例句Some writers make thorough mental preparation , before they put pen to paper.
一些作家在下笔之前就完全打好了腹稿.
来源:互联网摘选
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