Thd
abbr. 雙頭龍（Two Heads Dragon）；總諧波失真（Total Harmonic Distortion）；螺紋（thread）
??? 情景例句
We get our friends to roll their sleeves up and get to work.
我們召集我們的朋友共同卷起袖子來做。
Each item is to be wrapped separately in gerase-paper.
每件貨物應單獨用油紙包好。
I think I failed the French paper.
我想我的法語及不了格，我能回答