问：中国多次表示支持谈判“禁产条约”这个重要防扩散法律文书。

ACT: China repeatedly has expressed its support for an FMCT as an important nonproliferation instrument.

youdao

指出了分组密码的多次迭代使对称置换结构复杂化，可以选择对称置换作为分组密码算法的扩散部分来设计。

This paper shows that Hi-times substitute makes permutation structure more complicity, so symmetrical permutation can be chosen as the diffusion module in block cipher algorithm design.

youdao

这个谣言很快扩散，我儿子攻击了很多次，而且现在他害怕走到离家很远的地方。

Thisrumor took off rapidly, and my son has been attacked numerous times, and he's afraid to go very far from home.

youdao