Flameless powder
[化] 无焰火药
🧩 词语组成解析
[机] 无火焰的, 不起火焰的
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
How about guests?
来宾呢？
I'll pretend I didn't see that.
睁一只眼，闭一只眼。
It is fairly clear that sleeping period must have some function,
很清楚，睡眠必然具有某种作用。