The old peasant conjectured that it would be an unusually cold winter.

那老汉推冬天将会异常地寒冷。

I cannot conjecture what his plans are.

我拿不准他计划是什么。

The general conjectured that the enemy only had about five days’ supply of food left.

将军推敌人只剩下五天粮食给养。

It is largely a matter of conjecture.

多半是。

The rumor raised much conjecture.

谣言引起很多。

It's mere conjecture.

纯属。