Black powder
[化] 黑色火药
🧩 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;
powder
['paʊdɚ]
n. 粉，粉末;粉状物质;
vt. 在…搽粉;
vi. 涂粉，变成粉末;
🗣️ 情景例句
He made up his mind to give up smoking.
他下决心戒烟。
The tour will take about an hour and a half. We ought to be back here by 3:00.
参观大概要一个半小时，3点钟以前回到这里。
That's international practice. We can't break it.
这是国际惯例，我们不能违背。