knuckle的现在完成时怎么写？

n.（指人）指关节，（指动物）膝关节，肘，铰结，肘形接，铜指节套vt.用指关节打、压、碰、擦...

It is arguable whether the rebels will knuckle under.还不能确定反叛者是否会投降。The only thing to do was knuckle down and get on with some serious hard work.唯一能做的就是开始努力工作，好好干出点儿成绩来。They refused to knuckle under to any pressure.他们拒不屈从...

knuckle的复数形式为：knuckles...

knuckle的第三人称单数（三单）为：knuckles...

knuckle的一般过去时为：knuckled...

knuckle的音标：knuckle的英式发音音标为：['nʌkl]knuckle的美式发音音标为：['nʌkəl]...

The only thing to do was knuckle down and get on with some serious hard work.唯一能做的就是开始努力工作，好好干出点儿成绩来。It is arguable whether the rebels will knuckle under.还不能确定反叛者是否会投降。David Seaman was back in the Arsenal goal after brea...

knuckle的现在进行时为：knuckling...

Binger的音标：...

n.短语，成语，说法，乐句vt.叙述，措词vt.& vi.划分乐句，分乐节（尤指为奏乐或歌唱）...

“珠芽”的拼音为：zhū yá...

kunzite的音标：kunzite的英式发音音标为：['kʊntˌsaɪt]kunzite的美式发音音标为：['kʊntˌsaɪt]...

adv.毫无疑问地，确凿地...

lyricist的音标：lyricist的英式发音音标为：['lɪrɪsɪst]lyricist的美式发音音标为：['lɪrɪsɪst]...

cognate的音标：cognate的英式发音音标为：['kɒgneɪt]cognate的美式发音音标为：['kɑgneɪt]...

“哀悼者”的英语可以翻译为：mourner，lamehter ...

n.[动]猛玛（象），庞然大物adj.庞大的，巨大的...

“唱针”的英语可以翻译为：stylus，styli ...

Gatwick的音标：...

When can you give back the money that you owe?你欠的钱什么时候还?Give back there. The express is due.往后退, 快车就要进站了.The student who will graduate should give back the academic gown first.若为毕业生请先归还学位礼服....

n.食肉动物，食虫植物( carnivore的名词复数 )...

磺烟腙...

jag的一般过去时为：jagged...