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1.side effects 副作用
The drug is extremely potent, but causes unpleasant side effects.
这种药药效极强，但会产生不良的副作用。
2.be able to 能够
They may be able to help with childcare so that you can have a break
他们可以帮忙照料孩子，这样你就可以歇一歇了。
3.benefit from 收益
All the cells and tissues in the body benefit from the increased intake of oxygen.
体内所有的细胞与组织都从增加的氧气吸入量中受益。
4.until now 迄今
It has taken until now to pin down its exact location
直到现在才确定了它的准确位置。
