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他正在做实验。用英语怎么说？

他正在做实验。

He is experimenting.

相关词汇
he is experimenting

he

pron. 他，它，一个人；n. 雄性动物；

is

vt.& vi. 是（be的三单形式；n. 存在；

experimenting

vi. 做实验，进行试验（experiment的现在分词形式）；
热门例句
He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时，可以向商业票据的背书人要求支付的权力。
相关例句
You may be able to apply for exemption from local taxes.
你可能符合资格申请免除地方税。
Her excuse didn't go down well; no one believed it.
她的借口不能使人信服, 没有一个人相信它。
Give my excuses to your mother for having caused her so much trouble.
请代我向你母亲致歉, 我给她添了不少麻烦。
The prices at this hotel are excessive.
这家旅馆的价钱贵得过分。
The climb will exhaust the boys.
爬山会使那些男孩们疲惫不堪的。
He was expelled from the club for breaking the rules.
他因违反了规定而被开除出俱乐部。
After an exile of eight years her uncle returned to Cairo.
她叔叔背井离乡八年后返回开罗。
There's an exhibition of pottery-making at the fair.
在集市上有陶器制作的示范表演。
the most expeditious means
快速有效的方式
Heat causes the expansion of gases.
热使气体膨胀。
Things exchange for each other according to their cost of production.
根据各自的生产成本进行物物交换。
a piece of excrement
一块排泄物
Convenience is , however , in all affairs of life， an execrable test of value.
然而在生活事务的各方面，利益是可恶的价值准则。
Please do that exercise over again.
请重做那个练习。