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infantry – n. the part of an army that has soldiers who fight on foot
exception – n. a case where a rule does not apply
tank – n. a military vehicle that moves on two large metal belts with wheels inside them and that is covered in heavy armor
harness – v. to use (something) for a particular purpose
perspective – n. a way of thinking about and understanding something (such as a particular issue or life in general)
gradually – adv. moving or changing in small amounts; happening in a slow way over a long period of time
engage in – phrasal verb to do (something)
