I was busy climbing my ladder, which was sturdy and practical and aimed straight up.

我忙着爬我的梯子，它坚固用，而且笔直地对准了上方。

The evident justice and utility of the foregoing maxims have recommended them, more or less, to the attention of all nations.

上述格言明显的正用性已或或少地引起了所有国家的注意。

Practical books can, however, state more or less general rules that apply to a lot of particular situations of the same sort.

然而，用书籍可以或或少地阐述适用于许同类特定情况的一般规则。

Nevertheless, the psychological fact has bearing on how effectively we read a practical book, and so we have discussed the matter here.

然而，心理事与我们如何有效地阅读用书籍有关，因此我们讨论了个问题。

The design of the horseface skirt cleverly combines practicality and aesthetics, not only facilitating walking, but also showing the elegance and charm of women.

马面裙的设计巧妙地将用性美学性相结合，不仅方便行走， 还展现了女性的优雅魅力。

But with the rise of the environmental movement — and with new substitutes for whale oil — the whale transitioned nicely from utilitarian energy source to perhaps the most iconic emblem of the natural world.

但随着环保运动的兴起——以及鲸油的新替代品——鲸鱼很好地从用能源转变为也许是自然世界最具标志性的象征。