A single man; a bachelor; one who is unmarried and lives alone.
在这个城市打拼多年，他一直是光棍一条，生活虽然自由但也有些寂寞。
Having worked hard in this city for many years, he has always been a bachelor, and while life is free, it's also a bit lonely.
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A single man; a bachelor; one who is unmarried and lives alone.