站成一行 meaning in Chinese

stand in a line
stand in a row

The girls formed a line at the door
女孩子们在门口站成一行。
The sniggering extra ladies were quite frightened when they recognized her , and they formed in line and stood up , looking as stiff and serious as servants whom their mistress has caught behaving badly
正在冷笑的几个女群众演员认出是娜娜，顿时害怕起来，便站成一行，表情呆板而严肃，像一群正在做坏事的女仆被女主人撞见似的。