Rolledbales of hay should be used only when absolutely necessary, and only if theouter layers are removed and discarded.
确实需要时可以使用成捆的干草，但外层要剥掉废弃
Wearing your heels only when absolutely necessary can reduce the likelihood that you develop heel-related health problems such as ankle sprains, early onset osteoarthritis, and joint problems.
只在真正有必要的时候才穿高跟鞋可大大减小你患高跟鞋引起的健康问题的可能性，如踝关节扭伤，早期骨关节炎和其他关节问题。
There is an XML schema pattern that you can follow to get the equivalent distinction, but this pattern is not well recognized by standards bodies and should only be used when absolutely necessary.
您可以遵循一种XMLSchema模式来等价地获取这种差别，但是这个模式没有得到标准组织很好的认可，仅当绝对必须时才应该使用。
Select a very secure password for root, and only log in as root when absolutely necessary.
您应该为root选定一个安全的密码，并且只有在绝对需要的时候才以 root身份登录。
If your site is constantly sending out updates and news announcements, it can quickly overwhelm users. Only send out notifications when absolutely necessary.
如果你的网站不断地发送更新内容和新闻通知给用户，这些信息也很快会将用户淹没的。
We recommend that you only hand your passport over to third parties, including Israeli officials, when absolutely necessary.
我们建议，只有当必需的时候，你再将你的护照交给第三方，包括以色列官员。
Avoid the sanitary cycle: This super hot cycle, available on some models, increases energy use significantly, so only use it when absolutely necessary.
避免生周期：这个超级热周期，可在某些型号，增加了能源的使用显着，所以只有使用它时绝对必要的。
The code that such a disbanded team wrote is very much in maintenance mode, changes are only made when absolutely necessary.
这样的解散团队写在维护模式非常的代码，只有在绝对必要时的改变。
Sean Bean (Boromir) was afraid of flying and would only do it when absolutely necessary.
肖恩·宾害怕坐飞机，不到非坐飞机不可的时候他是不会坐的。
Sean Bean (Boromir) was afraid of flying and would only do it when absolutely necessary.
肖恩·宾害怕坐飞机，不到非坐飞机不可的时候他是不会坐的。
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