Ships use two types of barometers to measure air pressure: aneroid and mercurial.
(Ships; use; two types of barometers; to measure air pressure) Context(Ships use,List([0, 9))):(Ships; use two types of barometers to measure; air pressure)
Ships use,List([0, 9))
Ships Ships
use use two types of barometers to measure
two types of barometers to measure air pressure
air pressure