Femtosecond
n. 毫微微秒
🗣️ 情景例句
This.
这个。
I invited him ti come down, but he wouldn't.
我请他下来，但是他不肯。
Working rapidly in the darkness, he soon changed into the dead man's clothes.
他在黑暗中忙活了一阵儿，很快就换上了死者的衣服。