Knag
n. 木節(jié), 木瘤
??? 情景例句
Sounds of the country.
鄉(xiāng)村音響。
I went bowling last night.
我昨晚在打保齡球。
only of metal, which wears away by friction.
而是由金屬組成，而金屬可以隨著磨擦而磨損殆盡。