Black leader
【矿物】石墨，笔铅，黑铅
🧩 词语组成解析
black
[blæk]
adj. 黑（色）的;黑色人种的;黑暗的;不加牛奶的;
n. 黑色;黑人;黑颜料;黑暗;
v. 使变黑;抵制;拒绝;使变黑暗;
🗣️ 情景例句
We know.
我们知道。
Oh? Where were you?
哦，上哪儿去了？
They work all day.
他们整天营业。