查询词典 devoices

Despite critics who say that money in developing countries is better spent on books and teachers, placing such devoices into the hands of children is a worldwide diffusion of knowledge for a cost so low the savings are scarcely imaginable.

尽管批评者称，发展中国家的这些钱更应该用在书本和教师身上，给孩子们这些设备是全球性的知识传播，其开销在储蓄如此之低的地方是无法想象的。

I can do simple painting, carpentry and plumbing.

我能做简单的油漆、木工和修水管等工作。

The motivations, notations and outline of this work are also given in this chapter.

从这个意义上讲，这些时滞是无害的。然后用实例说明这三个定理的应用和互不包含性。