Sentence examples for being difficult to determine from inspiring English sources

Plasma cytokine levels show high levels of products with largely opposed functions being difficult to determine which predominates.

The answers are difficult to determine.

The truth was difficult to determine.

That has been difficult to determine".

But officials said the number would be difficult to determine.

It is difficult to determine what, precisely, the labs do.

It can be difficult to determine refugees' ages.

He said that it was difficult to determine.

The cause of the decrease is difficult to determine.

The reasons for that are difficult to determine.

Whether Instagram "likes" translate into sales is difficult to determine.