Words similar to challenges

Example sentences for: challenges

How can you use “challenges” in a sentence? Here are some example sentences to help you improve your vocabulary:

The noise rushes on through all the activity, a metaphor for the challenges of the 1990s.
These policy challenges are linked to the problem of imagination we have already discussed.
In such cases, one of the challenges for tumor immunology is to find effective means to overcome these barriers to productive efficacious anti-tumor immunity.
There are challenges associated with the partly subjective nature of categorization of gene function, such as where to place a single gene product that is involved in several cellular tasks.
But the vacuum created by the sudden demise of the Soviet Union created fresh sources of instability and new challenges for the United States.