Kernels
n. 核心程序, 核心（kernel的复数形式）
🗣️ 情景例句
Why don't you call back later this afternoon?
你何不今天下午再来电话呢？
What time are you leaving?
你几点钟走？
because this is easier to shape than other kinds.
因为燧石较之其他石头更容易成形。