Assertion: performance glider | /r/Synonym | self-sustaininggliders
Facets:
Source sentences:
text: Some high-performance motor gliders (known as "self-sustaining" gliders) may have an engine-driven retractable propeller which can be used to sustain flight.
text: Some high-performance motor gliders (known as "self-sustaining" gliders) may have an engine-driven retractable propeller which can be used to sustain flight.