281.  The conductor is reluctant to reduce the conductivity of the semiconductor¹.

导演不情愿降低半导体的导电率。

282.  The producer introduced a productive technological² product into production.

制造者把一项多产的技术成果引进到生产中。

283.  The anxious man is unconscious of my anxiety.

那个不安的人没有觉察到我的忧虑。

284.   Previously³ he was obviously envious⁴ of my success.

先前他明显地嫉妒我的成功。

285.  I highly appreciate the preceding man's precious precise exercise.

我高度欣赏前面那个人可贵的精确演练。

286.  The miracle mirrors a horrible error made by the terrorists in the terrible territory.

这件奇事反映了恐怖分子在这一可怕地区犯的可怕错误。

287.  I hurt my tongue when I hurried to eat cherry and strawberry merrily.

我匆忙快活地吃樱桃和草莓时伤了舌头。

288.  The man proclaimed in exclamation⁵ that he aimed to reclaim⁶ the aimless claim.

那个人呼喊着声明说他打算索回无目标的索赔。

289.  In no circumstances can the bicycle in the circle of the circus be a focus.

马戏表演圈子中的自行车决不会成为焦点。

290.  I'm busy unless I'm blessed with less lesson.

我很忙,除非我很幸运只有少量功课。