Sentence examples for very difficult to split from inspiring English sources

In nature, more than 99percentt of uranium is of a type called U-238, which is very difficult to split in a nuclear reaction and thus not good fuel for reactors or bombs.

Some types of wood, i.e. sweet gum, winged elm and pecan are very difficult to split.

It's very difficult to break in.

In practice, it is very difficult to obtain the condition "(Y_{j}) is not split by (E)".

In practice, the optimal flow split would be very difficult to predict, as one would first need to know the structure of the reservoir from solving an inverse problem based on tracer tests.

Very difficult to say.

Very difficult to answer.

It is very difficult to.

"It's very difficult to balance.

"It's very difficult to be objective".

All that was very difficult to write.