"on the shelf" in Chinese (Simplified)
在架子上被搁置（比喻）单身很久（比喻）
Definition
字面意思是“在架子上”，指放在架子上的东西。比喻地说，指被遗忘、忽视或搁置不用的事物，也可以形容长时间单身的人（多指女性）。
Usage Notes (Chinese (Simplified))
字面用法常见，比喻用法（尤其指单身）在现代语境少用，容易有负面或刻板印象色彩。在工作和生活中常指某事被搁置不用。
Examples
The books are on the shelf.
书本**在架子上**。
The project has been on the shelf for months.
这个项目已经**被搁置**好几个月了。
Some toys stay on the shelf and are never played with.
有些玩具一直**在架子上**，从没被玩过。
After the update, this old app was left on the shelf.
更新后，这个老应用就被**搁置**了。
Many ideas end up on the shelf if no one supports them.
如果没人支持，很多想法最终都会**被搁置**。
She was tired of feeling on the shelf just because she was single.
她受够了因为单身就被觉得是**被搁置的人**。