如何使用 "descant" 造句

1. To sing or play a descant .
演唱(或演奏)高音部。
2. The boy singers were asked to descant on the tune .
要求男孩子们唱高音部分。
3. You need not descant upon my shortcomings .
你不需要详述我的缺点。
4. He is going to descant on the beauties of the scene .
他将详述风景的。
5. Descant endlessly on the government 's failings .
无尽无休地谈论政府的过失。