推测的英文：
conjecture
speculate
speculation
surmise

参考例句：

By guess; by estimation
用推测;猜测

There are ample grounds to supposition
大有推测多余地

Presumably poliovirus was incorporated into the resistant cells during the fusion process.
据推测，脊髓灰质炎病毒是在融合过程中渗入到耐受细胞内的。

We gathered that this was taking a toll on the family and their relationship
我们推测这给他们的家庭和彼此的关系敲响了警钟。

Doubtless one of the charming females Albert had detected beneath their coquettish disguise was touched by his gallantry
漂亮女人——这是阿尔贝从她们风骚的化装上推测出来的——中的一个无疑地被他的殷勤献媚所打动了。

We can only speculate about the future.
我们只能推测将来。

Speculate on the outcome of negotiations
推测谈判的结果

Speculate about the origin of the universe
推测宇宙的起源

The doctors speculate that he died of cancer.
医生推测他死于癌症。

The presumable result is an election defeat
推测结果可能竞选失败.

conjecture是什么意思：
n. 推测，猜想，揣摩
v. 推测，猜想，揣摩

This statement conjecture is not well founded on.
这个猜想并没有正当的根据。

Jermy Taylor conjectures that it may be as painful to be born as to die
哲里米·泰勒认为生或许像死一样痛苦。

I do not conjecture an immediate drop in demand.
我推测需求不会马上降低。

speculate是什么意思：
v. 猜测，推断，推测；投机，做投机买卖

He ventured on a rash speculation.
他进行鲁莽的投机。

His conclusions are purely speculative.
他做出的结论纯粹是推测而来的。

Every induction is a speculation.
所有归纳推理都是一种猜测。

speculation是什么意思：
n. 思索；推测；投机（买卖）

He ventured on a rash speculation.
他进行鲁莽的投机。

His conclusions are purely speculative.
他做出的结论纯粹是推测而来的。

Every induction is a speculation.
所有归纳推理都是一种猜测。