yawn的第三人称单数怎么写？

vi.打呵欠，张开，裂开，张开大口n.呵欠，无聊的人或事，裂口...

yawn的现在完成时为：yawned...

She stretched her arms out and gave a great yawn.她伸了个懒腰，打了个大哈欠。She makes no attempt to stifle a yawn.她忍不住打了个哈欠。The debate was a mockery. A big yawn.这场辩论实在可笑。简直是无聊透顶。...

yawn的现在进行时为：yawning...

yawn的音标：yawn的英式发音音标为：[jɔ:n]yawn的美式发音音标为：[jɔn]...

The concert was a predictable yawn.果不其然，那场音乐会很乏味。She stretched her arms out and gave a great yawn.她伸了个懒腰，打了个大哈欠。Her yawn suggests that she is sleepy.她打哈欠表示她很困了。The meeting was one big yawn from start to finish.那会议自始至终十分无...

yawn的一般过去时为：yawned...

yawn的复数形式为：yawns...

(pl.Omaha,Omahas)奥马哈人（内布拉斯加东北部的印第安人）...

jurisprudence的音标：jurisprudence的英式发音音标为：[ˌdʒʊərɪs'pru:dns]jurisprudence的美式发音音标为：[ˌdʒʊrɪs'prudns]...

基肥与追肥之间肥效无显著差异.There was no obvious difference between base fertilizer and after manuring.将矿物材料用于肥料中,可以提高肥效,改良土壤.Fertilizer efficiency can be improved by adding mineral materials.尽管有这些优点, 但常见的施肥措施造成尿素肥效不高.Despite these a...

n.船员，乘务员，机组成员...

Kromore的音标：...

n.谢恩(m.)...

“旁切”的英语可以翻译为：escribe ...

n.节约，节俭，储蓄金，挽救v.拯救( save的现在分词)，收集，保留，避免prep.除…以外adj.可取的，保存的，节省的，节约的，补偿的，救助的...

Cyclopentanone ethylene ketal was synthesized with I _ 2 as catalyst.以单质碘为催化剂合成了环戊酮乙二缩酮.The effects of reactant mole ratio , catalyst dosage , microwave irradiationtimeyield of cyclohexanone glycol ketal were investigate...

Mulcahy的音标：...

Arabians的音标：...

n.马拉赤鹿，里海赤鹿...

countenance的音标：countenance的英式发音音标为：['kaʊntənəns]countenance的美式发音音标为：['kaʊntənəns]...

constant的近义词有：continual, continuous, successive, constant, persistent,faithful, loyal, constant, true。下面这些形容词均有"连续的，不断的"的含义：continual：强调重复或持续发生，但连续之间允许有间断。continuous：语意最强，强调在时间和空间上没有间断。successive：强调事物一个接一个地发生，无间断。constan...

分析计算机...