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1.Such children could be suffering from malnutrition–a poor diet.
suffer from受（某种病痛）折磨
Refugees settling in Britain suffer from a number of problems.
在英国定居的难民面临很多问题。
2.And so if we look at the change in the distribution of the oxygen in your brain, we can work out how active your brain is and what your brain is actually processing.
work out算出；制定出；解决
It took me some time to work out what was causing this.
我花了一些时间才弄清此事的起因。
