他此刻正在南美旅游观光。He's touring South America at this moment in time.最好是乘坐旅游巴士或骑自行车观光。Sightseeing is best done either by tour bus or by bicycles.观光巴士已经取代了火车。Tour buses have replaced railway cars....
The chromogenic reaction between HSCT and silver was studied.研究了氯磺酚偶氮硫代若丹宁(HSCT)与银的显色反应.Chromogenic black - and - white photographic film is a new emergent type of black - and - white film.黑白 染料胶片是继彩色胶片之后发展起来的一种新型黑白胶片品种....
He felt no qualms about using expletives in our interview.他在同我们会面时用咒骂的话都没觉得不安.The expletives were deleted from the transcript.咒骂部分被从手稿中删除....an author who writes in a lurid lingo, freely punctuated with crude expletives....