19考研英語：屠屠長難句（七十七）

01 每日一句長難句
The engines would have variable nozzles, which would be fully opened on take-off and landing, so that the exhaust would be slow and relatively quiet, and narrowed when the aircraft was cruising, providing the necessary speed.

02【句型分析】

本句是主從複合句。主句爲The engines would have variable nozzles。其後的定語從句比較複雜，以逗號後and爲切入點，得到which would be fully opened…and narrowed…，關係代詞which指代先行詞nozzles在從句中作主語。其中so that引導的結果狀語從句so that the exhaust would be slow and relatively quiet說明(nozzles)would be fully opened on takeoff and landing情況發生時所產生的結果，句末的現在分詞結構providing the necessary speed 作(nozzles)would be narrowed when the aircraft was cruising情況發生時的伴隨結果。

03【詞彙】
engine 引擎

variable 各種各樣的

exhaust n.排氣---exhausted 筋疲力盡的

cruise 巡航，巡遊

04【參考譯文】
引擎配有各種各樣的尾噴管，在起飛和降落時它們會全部打開，這樣噴氣速度會下降，噪音也會更小；而在飛機巡航過程中，尾噴管將變小以保證必要的飛行速度。

05【明日長難句】
In each case the pattern is the same: young people adopt a new form of entertainment, older people are spooked by its unfamiliarity and condemn it, but eventually the young grow up and the new medium becomes accepted—at which point another example appears and the cycle begins again.