e.g. The city buses continue to ply as usual even on weekends and holidays.
e.g. The craftsmen come to the flea market to ply their trades.
e.g. My grandmother likes to ply us with snacks whenever we visit her.
e.g. The uppermost ply of the board has become damp and damaged, so they removed it and put in a fresh layer.
e.g. The rope started to fray, one ply at a time, until it finally snapped.
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