Piston skirt
[機] 活塞裙
?? 詞語組成解析
piston
['p?st?n]
n. <機>活塞;
skirt
[sk?t]
n. 裙子;邊緣;（連衣裙、外衣等的）下擺;（車輛或機器基座的）擋板;
vt.& vi. 位于…的邊緣;沿…的邊緣走;繞開;避開;
??? 情景例句
And besides,
更何況，
That's really something.
真了不起。
What are you going to give our art teacher for Teachers' Day?
教師節你打算送什么禮物給我們的美術老師？