1.
The orchestra were tuning up as we entered the hall.
我们进入大厅时，管弦乐队正在调音。
2.
Before he began to play, Harry tuned up his banjo.
开始演奏前，哈利先行调好他的五弦琴。
exercising in preparation for strenuous activity
同义词:warm-up,prolusion
adjustments made to an engine to improve its performance
adjust for (better) functioning
同义词:tune
adjust the pitches of (musical instruments)
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