放學后獨自在家無人照看的兒童被稱為“掛鑰匙兒童”，而因為丈夫上夜班不得不獨守空房的妻子則相應地被稱為latchkey wife（掛鑰匙妻子）。

“Latchkey wife” is based on the phrase "latchkey kid." “Latchkey wife” refers to a wife who comes home from work to an empty house, left to her own defenses during the evening, while husband works opposite shift.

“掛鑰匙妻子”是基于“掛鑰匙兒童”而產生的新詞。“掛鑰匙妻子”指那些因為丈夫值夜班而不得不下班后獨守空房的妻子。

Example:

Because of her time alone, the latchkey wife was free to have complete control over the remote control and the computer with no interruptions!

因為有大量獨處的時間，“掛鑰匙妻子”可以完全自主不受干擾地使用遙控和電腦。

（中國日報網英語點津 陳丹妮）