Although negotiators are optimistic, the details are complex enough that they may be hard-pressed to get a deal at all.

然谈判代表持乐观态度，但协议细节如此复杂，他们所面临的困难很可能使他们无法取得一致。

It cuts a clean cylinder of rock,

这种钻头能切割一段光滑的圆柱形岩石，

and in passing leaves and indefinable longing and regret.

并在消逝中给人留下不可名状的渴望和惆怅。

This is what happened to the famous Beresovka mammoth which was found preserved and in good condition.

著名的那林索夫卡长毛象就是这样被保存下来的，而且保存得很好。

but at this age the likelihood of death is least.

但在这个年龄死亡的可能性最小。

From both maturity to death, a wave is subject to the same laws as any other'living'thing.

从成熟到消亡，波浪和其他任何活动中"的东西一样，都受制于共同的法则。