这是一本很实用的书。

It is a useful book.

youdao

它包含了一些对时常忧虑之人很有价值而且很实用的建议。

It contains invaluable, practical advice for those of us inclined to worry about things.

youdao

但是不得不说anki所具有的自动保存功能还是很实用的。

But, at least Anki has a very functional autosave feature.

youdao

But I want you to keep that template in mind because we're going to come back to that.

这是一个对我们,很实用的通用工具。

麻省理工公开课 - 计算机科学及编程导论课程节选

with the continuous knapsack problem as we've formulated it, greedy is good.

因为正如我们已经归越过的,对于一般连续性背包问题贪婪算法很实用。

麻省理工公开课 - 计算机科学及编程导论课程节选