guesswork

音標發(fā)音

Eyewitnesses and guesswork.
目擊與猜測。
A great deal of uncertainty surrounds these estimates because so much depends on guesswork.
由于猜測的成份很重，對這些估計值還存在很大的不確定性。
On the minus side, there's no documentation apart from the PHP code itself, so getting this library to work entailed some guesswork.
而這個庫的弊端是除了 PHP 代碼本身外不存在任何文檔，因此使用這個庫必然會進行一些猜測。

For most of us in the online journalism business, writing headlines basically amounts to guesswork.
FORBES: These Five Astonishing Headline Writing Secrets Will Make You Cry, Or At Least Click
The criteria for which pages are targeted for the supplemental index remains a subject of guesswork.
FORBES: Magazine Article
Until recently, determining the source of the pollution relied on little more than guesswork.
ECONOMIST: Pollution detection

Guesswork is the process of trying to guess or estimate something without knowing all the facts or information.