( picket lines)
A picket line is a group of pickets outside a place of work.
No one tried to cross the picket lines.
N-COUNT
( picket lines)
A picket line is a group of pickets outside a place of work.
No one tried to cross the picket lines.
N-COUNT
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006