2. As tobacco cigarette burns, a
potpourri of 4000 chemicals is released, including carbon monoxide and hydrocyanic acid .
当烟被点燃时,融合了四千种化学品的气体被释放出来,其中包括一氧化碳和氢氰酸。
3. Because our feature articles have increased somewhat and space is limited, the Potpourri section has indeed been cut back recently.
由于本刊在专题报导上略有增多,又限于篇幅的关系,文摘部分最近确实有所删减。