blank holder的用法和樣例：
例句
- Also available is an adapter piece for linear variable filters that fits onto a cuvette holder to clamp the filter slide carriers into place.
我們還提供可用線性可變濾光片的適配器片，它可安裝在試管支架上用於將濾光片幻燈機固定在合適的位置。 - If you have children, you might want to squash the roll before putting it on the holder to make it harder to unroll and waste the paper.
如果你家中有小孩，你可能會想要在把這個紙卷放在支架上前先壓扁，這樣紙卷不太會滾動也不會浪費紙張。
