Sentence examples for may be optional from inspiring English sources

A knife may be optional depending on whether or not you want to apply butter, but a plate is essential.

Breakfast may be optional, but all other meals are compulsive, eating between meals is compelling, and lunch is compulsory.

There may be optional extras, such as checking a bag or reserving a specific seat, and airlines should feel free to itemise the various fees at the check-out.

Some universities will make modules in Greek or Latin a compulsory part of the course; for others they may be optional or offered in addition to the regular modules – either way, learning the language is worth the effort to fully understand the outstanding range of texts that the subject offers.

Patella replacement may be optional.

where txTime is calculated depending on the network configuration and may be optional.

With a widely reported decline in the world's honey bee population, relying on native pollinators - honey bees and bumble bees - may not be optional in the future.

Ventricular volumes may be reported (optional).

It may be an optional scheme in the static networks.

Bone marrow stromal cells may be potentially optional seed cells for peripheral nerve tissue engineering because of abilities of promoting axonal regeneration.

In addition, to reduce the risk of tumorigenicity, use of L-MYC instead C-MYC may be an optional choice for the generation of clinical grade iPS cells [36].