Coopal powder
[建] 苦拔炸藥
?? 詞語組成解析
powder
['pa?d?]
n. 粉，粉末;粉狀物質;
vt. 在…搽粉;
vi. 涂粉，變成粉末;
??? 情景例句
Of course, Harry.
當然可以， Harry。
Think all you speak, but speak not all you think.
想想你所說的一切，不要全部說出你所想的。
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.
某些大公司進行的研究屬于一般和基礎性的研究。因此不保密對他們才有利。