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a useless or worthless byproduct是什么意思？

a useless or worthless byproduct

无用或无价值之副产品

相关词汇
useless or worthless byproduct

useless

adj. 无用的，无效的，无价值的，差劲的，不怎么样的；

or

conj. 或，或者，还是，不然，否则，左右；prep. <古、诗>在…之前，比…更早；n. [纹章]黑金色、黑色；

worthless

adj. 无价值的，不值钱的，卑微的，不足取的，不足道的，不足轻重；

byproduct

n. 副产品，意外结果，副作用；
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
The crowd buzzed with excitement.
人群发出一片兴奋的说话声。
She can do anything but sing.
她除了唱歌之外, 什么都会做。
silver bullion
银条
Are you to go there by bike or by bus?
你骑车还是坐车去?
His father bopped him on the buttocks for he was too naughty.
他父亲打他的屁股,因为他太淘气了。
We had to burst the door open.
我们不得不破门而入。
Mother was busily cutting sandwiches.
母亲正在忙着切三明治。
The dog had chased a rabbit into its burrow.
狗把兔子追进了洞穴。
They never meet but they discuss this problem.
他们每次见面都讨论这个问题。
He felt lonely after he buried his good friend.
埋葬了好友之后, 他感到很孤独。
Our victory was dearly bought.
我们的胜利是付出巨大的代价而获得的。
Now, the bad news: the book is a bummer.
现在宣布坏消息：这本书失败了。
I dropped my camera on the pavement and bust it.
我把照相机掉在人行道上摔坏了。
We were in a buoyant mood after winning our match.
我们赢了比赛,心情很振奋。