liquid crystal screen的用法和樣例：
例句
- A protective cover safeguards delicate LCD screens and flips up for screen access.
保護面能夠維護液晶顯示屏的靈敏性和觸摸效果。 - They require little current, need no backlighting and can be produced for little more than half of the cost of a liquid crystal display screen.
它們需要的電流很小，不需要背光，並能以液晶顯示屏一半多一點的成本生產。
