These things will not disappear for a long time.
这些感觉在很长一段时间内不会消息。
It is a stable and mature language whose features are unlikely to disappear for a long time and has been ported to most, if not all, platforms.
作为一种既稳定又成熟的语言，其特性长期来看未必会消失，而是移植到了大多(如果不是所有)的平台上。
The colour will slowly disappear if the stamps are put in the light for a long time.
如果把邮票长时间放在光线下，颜色会慢慢消失。
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