trace的现在完成时怎么写？

We must trace the source of these noxious gases before they asphyxiate us.在我们被这些有毒气体窒息之前,必须查出其来源.There was a trace of exasperation in his voice.他的声音听上去有些愤怒。The lecture will trace the depiction of horses from earliest tim...

Brand's keen ear caught the trace of an accent.布兰德敏锐的耳朵听出了口音。Now draw or trace ten dinosaurs in ascending order of size.现在按照体型由小到大的顺序画出或是临摹出10只恐龙。There was a trace of exasperation in his voice.他的声音听上去有些愤怒。...

trace的一般过去时为：traced...

trace的近义词有：pursue, follow, chase, hunt, trace, track, trail。下面这些动词均含"跟随，追踪"的含义：pursue：指坚持不懈、毫不动摇地紧跟、追赶某人、某物或某个事业。follow：普遍用词，含义最广，多指跟随起引导作用的人或物，跟随的动机可以是善意的，也可能是恶意的。 chase：指快速追赶或决心追踪，褒义贬义均可用。hunt：原义为"追猎、猎取"，现用于指追捕或搜寻逃犯等。t...

trace的复数形式为：traces...

trace的第三人称单数（三单）为：traces...

vt.跟踪，追踪，追溯，探索，探索，查找vi.沿着一小径或道路前进，可以追溯的n.痕迹，踪迹，微量，极少量，[植]（脉）迹，痕迹...

trace的现在进行时为：tracing...

trace的音标：trace的英式发音音标为：[treɪs]trace的美式发音音标为：[treɪs]...

她的床收拾得很整洁，衣服也收起来了。Her bed was crisply made, her clothes put away.我染上了急性风湿，卧病在床。I was laid up in bed with acute rheumatism.浅海床提供了丰富的食物。The shallow sea bed yields up an abundance of food....

The skin of amphibians is permeable to water.两栖动物的皮肤是透水的。Most amphibians have caducous gills.大多数两栖类动物都有早落腮.Amphibians live partly in water and partly on land.两栖动物有时生活在水中,有时生活在陆上.Two amphibians ferry them out over the san...

pawned的音标：...

“成熟”的英语可以翻译为：ipe，mature，[生] maturation，maturity，age ...

When Mary died Anne did not share her brother's sense of bereavement.玛丽去世后，安妮并没有像她弟弟那样哀痛。The period of mourning and bereavement may be long...丧亲和哀悼的悲伤会持续很久。I sympathize with you in your bereavement.我对你痛失亲人表示同情.the p...

His cheeks were spotted with blackheads.他的双颊上长了一些黑头。Never squeeze blackheads, spots or pimples.千万不要挤黑头、小肿块或粉刺。Ground radish seeds formed into paste and mixed with water remove blackheads.地面萝卜种子形成贴和与水混合删除黑头....

Bononian的音标：...

The retainers attended their lord.仆人服侍他们的老爷。The rear door scuff plate is attached with molded - in snap retainers.后车门框板由模制 紧压 保持器连接.Disconnect the power mirror wire harness retainers from the inner door panel.从内侧车门饰板断开电动...

careerists的音标：...

n.公司，法人，社团，团体，〈口〉（凸出的）大肚子...

demesne的音标：demesne的英式发音音标为：[də'meɪn]demesne的美式发音音标为：[dɪ'men, -'min]...

Lecythidaceae的音标：...

逼真性的理论是他关于科学的目的的理论.His theory on verisimilitude is a theory on the end of science....

关于厌食的起因存在颇多争论。The causes of anorexia are much debated.厌食是一种常见的饮食紊乱症.Anorexia is a common eating disorder.早期症状有厌食、肌无力和疲劳。Early symptoms include anorexia, muscular weakness and fatigue....

faunizone的音标：faunizone的英式发音音标为：['fɔ:nəzəʊn]faunizone的美式发音音标为：['fɔnəzoʊn]...