| 单词 | 亦可 |
| 释义 | 〔heptane〕A volatile, colorless, highly flammable liquid hydrocarbon, C7H 16, obtained in the fractional distillation of petroleum and used as a standard in determining octane ratings, as an anesthetic, and as a solvent. 庚烷：一种易挥发、无色、非常易燃烧的液状碳氢化合物，C7H 16，由石油的分级蒸馏而来，用作辛烷分级的标准，亦可作麻醉剂和溶剂 〔evil〕a leader's power to do both good and evil.一个领导者的权利既可行善亦可为恶〔between〕certainlybetween would be impossible). Between is the preferred choice when the entities are seen as determining the limits or endpoints of a range: 后一句亦可适用于当仅有两者时的情况；当然between 是不可能的）。 实体被视为确定某范围的界限或终点时，更适合选择用between ： 〔convertiplane〕An airplane built to fly vertically as well as forward.垂直升降飞机：一种既可向前飞亦可垂直飞行的飞机 |
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