Black nut
[化] 粗制螺母
?? 詞語組成解析
black
[bl?k]
adj. 黑（色）的;黑色人種的;黑暗的;不加牛奶的;
n. 黑色;黑人;黑顏料;黑暗;
v. 使變黑;抵制;拒絕;使變黑暗;
nut
[n?t]
n. 螺母，螺帽;堅(jiān)果，堅(jiān)果果仁;難對(duì)付的人;[樂]弓根;
v. 采堅(jiān)果;拾堅(jiān)果;
??? 情景例句
You're writing a book?
你在寫一本書嗎?
The darkest hour is that before the dawn.
黎明前是最黑暗的時(shí)刻。
My mouth is watering.
我要流口水了。