这一段是《机械冶金学》中的片断，比较专业，感觉不容易准确翻译。大体就是说coaxing可以延缓金属疲劳，延迟断裂，并且低碳钢和纯铁等比较适合coaxing，而黄铜，铝合金等不适合coaxing。
So from this it can be seen that coaxing is a very precise process which is not really comparable to advice such as "play it gently for a while before you let rip", or "hold it out of your car window for a few minutes as you drive down the highway". It can also be seen the none of the materials from which harmonica reeds are typically made (various types of brass and in some very rare cases, stainless steel) are known not to benefit from the coaxing process.
从上面可以看出coaxing是一个相当精密的处理过程，与“轻轻演奏”和“开车时把口琴放到窗外”并没有可比性。而且口琴簧片的材料（主要为黄铜，也有极少见的情况下是不锈钢）并不适合coaxing。
One thing which certainly does happen is that the player becomes more used to the instrument. As you will have noticed if you've ever accidentally put the harp into your mouth the wrong way around (we've all done it!) each reed requires a slightly different playing technique. If you accidentally draw on hole 9 thinking that it is hole 2, the chances are that no note at all will sound. You make an incredible amount of tiny adjustments to your playing technique for each hole of the harp, these adjustments being made almost unconsciously - I believe that a large part of the "breaking in period" has more to do with breaking in the player than with breaking in the harp.
确实会发生的一件事是演奏者会逐渐熟悉和适应自己手中的乐器。大家可能都注意到了，如果你偶然使用了错误的含琴方法，那么每个孔的演奏方法都要有些变化。如果你把琴拿反了，以为自己是在吸第二孔，但实际上是第九孔，那么可能不会发出任何声音。实际上，在吹奏口琴的过程中，你会对自己的动作做出无数细微的调整（以使口琴的每个音孔都正常发声），这种调整通常是无意识的——我相信，在“开琴”的过程中，真正改变的是演奏者而不是口琴（与其说是“开”琴，不如说是“开”演奏者）。
译注（一些题外话）：一个类似的事实是，初学者往往会被告知口琴的不同音孔其用气的方法是不一样的。要想尽快入门，必须尽快熟悉不同音孔的用气方式，在高音跳到低音或者相反的时候，可以马上调整气息，这样才能连贯演奏。这种调整会随着练习的深入变成无意识的。这个时候就可以说你已经开始熟悉这件乐器了。再进一步，主动地调整气息，有意识地在每一个音孔上找出省力而发音好听的用气方法并反复练习，甚至直到把这种气息练成下意识的行为，这是初学者快速取得进步的一种有效方法。另外，判断一支口琴质量如何的一个方面，就是看它是否有个别音孔太“个性”，比如特别难吹，音色和其他音孔差别过大等等。在这种情况下，要想在曲子中保持统一的音色比较困难，因为每到那个特别的地方，气息的调整就超出了下意识的范围，演奏者就要分心考虑，比如：又到那个难吹的音了，得多使点劲儿……等等。一般认为这样的口琴是不推荐使用的，尤其是半音阶口琴。
In the case of the chromatic harmonica, it is probably a good idea not to let rip in the first few minutes. Unlike most diatonics, the typical chromatic has valves which may take a while to settle properly into place. But in the case of blues harps, there is really nothing to be gained from "babying" them in their first weeks. How long your reeds last will depend upon how you play them, as well as on the harps themselves. Some harps (Lee Oskar and Suzuki ProMaster for example) have reputations for lasting longer than others. A harp which is well adjusted to your own playing style will tend to last longer, as you will be placing less strain on the reeds when you play. Good playing technique will also help, but keep your harp in its box all the time and it will probably last forever!
