Sliding key
[機] 滑鍵, 平行鍵, 導鍵
?? 詞語組成解析
a. 滑行的, 變化的\\n[機] 滑動
key
[ki?]
n. 鑰匙;（打字機等的）鍵;關鍵，線索，秘訣;（音樂的）調;
vt. 鍵入;鎖上;調節…的音調;提供線索;
vi. 使用鑰匙;
adj. 關鍵的;主要的;
??? 情景例句
I always worry.
我一向擔心。
Better say nothing than nothing to the purpose.
與其說話不中肯，不如一言不發好。
We need three times as much as we originally ordered.
原來的三倍。