Denaby powder
[化] 登纳比药; 登纳比炸药; 铵硝化钾炸药
🧩 词语组成解析
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
I feel as if we've met each other before.
我觉得我们以前见过面。
I'll back you up.
我支持你！
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
测出回声间隔的时间，便可算出该处海洋的深度。