Sentence examples for is difficult to watch from inspiring English sources

is difficult to forecast

is difficult to conclude

is difficult to disentangle

is difficult to weigh

is difficult to conceal

is difficult to interpret

is difficult to remove

is difficult to prove

is difficult to retain

is difficult to document

is difficult to illustrate

is difficult to deploy

is difficult to handle

is difficult to discover

is difficult to remain

is difficult to decide

is difficult to deliver

is difficult to obtain

is difficult to blame

is difficult to practice