thumbtack的复数形式怎么拼写？

I press the thumbtack into the board with thumb.我用大拇指将图钉按在木板上.The thumbtack pricked his index finger.大头针扎了他一下手指.He pinned up the notice with a thumbtack.他用图钉将通知挂起来....

n.图钉vt.用图钉钉住...

thumbtack的音标：thumbtack的英式发音音标为：['θʌmtæk]thumbtack的美式发音音标为：['θʌmˌtæk]...

“杜恩”的英语可以翻译为：[人名] Doone，[人名] Doune ...

“形势”的英语可以翻译为：terrain，topographical features，situation，circumstances，lay ...

aristocardia的音标：aristocardia的英式发音音标为：[ærɪstə'kɑ:dɪə]aristocardia的美式发音音标为：[ærɪstə'kɑdɪr]...

I'm not impressed by the promise of tax cuts against the backcloth of a public-spending deficit.在公共开支出现赤字的情况下承诺减税让我不以为然。...

绳子没系牢.The rope hasn't been tied fast.晾衣绳被拉紧并系牢。The clothes line is pulled taut and secured.他把帐篷用木桩系牢在地上.He pegged a tent down....

acone的音标：acone的英式发音音标为：[eɪ'kən]acone的美式发音音标为：[eɪ'kən]...

whimsical的音标：whimsical的英式发音音标为：['wɪmzɪkl]whimsical的美式发音音标为：['hwɪmzɪkəl, 'wɪm-]...

adj.令人畏惧的，害怕的v.害怕，恐惧，担心( dread的过去式和过去分词)...

geodesic的音标：geodesic的英式发音音标为：[ˌdʒi:əʊ'desɪk]geodesic的美式发音音标为：[ˌdʒioʊ'desɪk]...

而且可论证地创作深奥的债券的商人或许是最好人(们)松开他们.And arguably traders who create abstruse securities may be the best people to unwind them....

槲寄生是寄生于树上的植物.The mistletoe plant is a parasite on trees.帝国主义是垄断的 、 寄生的、垂死的资本主义.Imperialism is monopolistic, parasitic and moribund capitalism.幼虫寄生在绵羊的身上。Larvae are parasitic on sheep....

n.隐头花序...

v.（使某物）燃烧，着火( kindle的第三人称单数 )，激起（感情等），发亮，放光...

We watched two apes grooming each other.我们看两只猩猩在互相理毛.Chimpanzees and gorillas are both apes.黑猩猩和大猩猩都是类人猿.Men descended from apes.人起源于猿猴....