defect in的用法和樣例：
例句
- An imperfect image caused by a physical defect in an optical element, as in a lens.
色差由於光學器件(如透鏡)的物理缺陷而造成的不完美成象 - A defect in a legal document that can render it invalid.
破綻，失效可能導致其無效的法律文件的漏洞 - They detected no defect in the product.
他們沒發現產品有任何問題。 - A defect in the fuel lines prevented the missile from blasting off.
燃料管路上的一個缺陷妨礙了導彈的發射。
