pen的第三人称单数怎么拼写？

n.笔，笔尖，笔法，文笔，作家，围栏vt.写，把…关入栏中，关押，囚禁...

pen的复数形式为：pens...

pen的现在完成时为：penned...

Use different colours of felt pen on your sketch to avoid confusion.用不同颜色的毡头笔画草图，以免搞混。Draw the basic outlines in black felt-tip pen (see fig. 4).用黑色毡头笔画出基本轮廓（见图4）。He sat behind a desk laboriously writing with an Army iss...

pen的音标：pen的英式发音音标为：[pen]pen的美式发音音标为：[pɛn]...

Jack filched a pen from his friend's pocket.杰克从朋友的口袋里偷走了一支钢笔.He has used a mixture of mosaic, collage and felt-tip pen.他混合使用了马赛克、拼贴画和毡头笔。...a 14-carat gold fountain pen.14开金钢笔Could you hold the line and I'll ju...

pen的一般过去时为：penned...

pen的现在进行时为：penning...

inundate的现在完成时为：inundated...

相对来说几乎不产生放射尘和污染源的.Producing relatively little radioactive fallout or contamination.放射尘导致了朗格拉普岛的居民出现了怪胎 、 亢等多种疾病.The radioactive fallout caused abnormal births , thyroid problems , and other illnesses among Rongelap'...

We'd arrived the day before after a 10-hour passage from Swansea.从斯旺西出发航行10小时后，我们于前天到达。The vessel docked in Swansea after a ten-hour crossing.轮船在横渡10个小时后停泊在了斯旺西。Swansea University is set in rolling parkland overlook...

uncompetitive的音标：uncompetitive的英式发音音标为：[ˌʌnkəm'petətɪv]uncompetitive的美式发音音标为：[ˌʌnkəm'pɛtɪtɪv]...

breaths的音标：...

n.甜菜根...

watchfulness的音标：watchfulness的英式发音音标为：['wɒtʃflnəs]watchfulness的美式发音音标为：['wɒtʃflnəs]...

conjurer的复数形式为：conjurers...

“背后风”的拼音为：bèi hòu fēng...

“异像”的英语可以翻译为：aniseikania ...

contralateral的音标：contralateral的英式发音音标为：[kɒntrə'lætərəl]contralateral的美式发音音标为：[ˌkɒntrə'lætərəl]...

dobby的音标：dobby的英式发音音标为：['dɒbɪ]dobby的美式发音音标为：['dɒbɪ]...

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circulatory system的音标：circulatory system的英式发音音标为：['sɜ:kjələˌtɔ:ri: 'sistəm]circulatory system的美式发音音标为：['səkjələˌtɔri 'sɪstəm]...

Moreover,senior citizen discount is a direct irritant in what some politicians and scholars see as a coming conflict beteeen generations此外，在一些政治家和学者看来，老年公民折扣是上一代和下一代之间矛盾的直接刺激He said the issue was not a major irritant.他说那...