spring valve的用法和樣例：
例句
- The seat, spring cage, spring and disc assembly are now individual components.
閥座，彈簧閥籠，彈簧和閥瓣總成現在已成獨立的部件。 - All that is required is a valve.
全部所需的就只是一個活門。 - As your baby feeds, the built-in anti-colic valve flexes to allow air into the bottle to prevent vacuum build-up.
當你喂寶寶的時候，內置的防絞痛活門，可以讓空氣進入奶瓶，防止瓶內發生真空狀態。
