sealed pad的用法和樣例：
例句
- Payne has designed a new tear-tape system for opening hermetically sealed packs, which combines easy opening with airtight pack freshness.
佩恩設計了一個新的催淚開放磁帶系統的密封包裝，方便開放相結合的密封包裝保鮮。 - Those sealed glossy packs of cheeses and lunchmeat on your grocer's shelf can provide a particularly friendly home for nasty bugs that cause food poisoning, new research shows.
最新研究表明，食品店貨架上擺放的密封包裝的乳酪和午餐肉，能夠為一種致病菌提供特別有利的繁殖環境。
