调弦，定音，调整

1. (尤指乐队)调弦;调音：tune out 关掉(收音机等) | tune up (尤指乐队)调弦;调音 | turn against 对...采取敌对态度

2. 调整：tune-pattern 腔调 | tune-up 调整 | tuneable 可协调的

3. 调准：tune-out 失调,解调 | tune-up 调准 | tuned-anode 调屏的

4. 调音：tune out 关掉 | tune up 调音 | tune 曲调

1. (为乐器)调音，定弦
    When a group of musicians tune up, they adjust their instruments so that they produce the right notes.

    e.g. I could hear the sound of a band tuning up.
           我能听到乐队调音的声音。

verb

1. adjust the pitches of (musical instruments)

    e.g. My piano needs to be tuned

    Synonym: tune

2. adjust for (better) functioning

    e.g. tune the engine

    Synonym: tune