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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 town is bursting with tourists.
镇上到处都是游客。
It was a bumpy ride along the farm track.
去农场的小路颠簸不平。
They bungled the job
他们把活搞糟了。
The economy was further burdened by a flood of refugees.
难民大批涌来使经济负担愈加沉重。
I think we’ve a bumpy road ahead of us.
我觉得我们将要面临一段困难时期。
He was the butt of their jokes.
他是他们嘲笑的对象。
Our people’s support is a bulwark against the enemy.
人民的支持是御敌的强大力量。
People used to burn an oil lamp to get light.
从前人们点油灯照明。
The poet expressed his burning passion for the woman he loved.
这位诗人表达了他对自己热恋的女人的强烈情感。
A bunch of girls was[were] sitting on the grass.
一群女孩坐在草地上。
Press the buzzer when you want to talk.
你想讲话的时候就按蜂鸣器。
She tripped over the bump on the sidewalk.
她被人行道上一块隆起的地面绊了一下。
The watch was cheap, but it goes quite well.
这块表虽然便宜, 但走得很好。
No one is so old but he may learn.[No one is so old that he may not learn.
]活到老, 学到老。