Kevlar
[化] 凯芙拉
🗣️ 情景例句
Hello, who's speaking, please?
喂， 谁在讲话？
All produets have to go through five checks in the whole process.
所有产品在整个生产过程中得通过五道质量检查关。
However, this freedom can easily be abused.
然而，这种自由很容易被滥用。