it was the practice

in most villages in sri lanka, it was the practice to cook a little bit of extra food when preparing a meal.

在大多数斯里兰卡的乡村里，家家户户都保留着这样一个习惯：在做饭的时候，多下一些米在锅里。

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it was the practice of fortunate survivors of shipwreck to hang up some memento of their safety in one of his temples

海难的幸存者要在波塞冬神庙上挂一个脱险时留下的纪念物，这已经成为惯例。

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it was the practice of these people to sacrifice to their gods when rain had not fallen.

这些人有祭神求雨的习俗。

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The idea was well-known to communication engineers. In the X-system, it was the practice to sample each of the twelve 25 Hz channels fifty times a second.

通信工程师们对这种想法很熟悉，比如说X系统就是每秒对12个25赫兹的频道进行50次采样。

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