A cosmopolitan character might be experienced in the skills of etiquette, while an unrefined peasant might know countless folk tales about the fey.
一名四海为家的人物可能熟悉各地的风俗礼仪，而一个粗俗的乡下农夫说不定有数不尽的仙灵故事。
Linear alkylbenzenes can be produced from unrefined raw materials, and a continuous process can be realized with a lower ratio of benzene to olefin and a higher reaction space velocity.
研究表明，此工艺可以有效放宽对催化剂单程寿命的限制，可不经过精制，直接采用工业苯和工业烯烃进行烷基化反应，实现了连续生产。
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