20150823 【每日口說綀習】(immune systen)

Within a few weeks,
the body's immune system
will be so weakened
without any vitamins or minerals
that many will die from disease.

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immune
immunity against typhoid.
The law gives public school immunity from taxation.
diplomatic immunity
immune system

weak
She is still weak after her long illness.
He is a man of weak character.
He is weak in math, but good at English.

vitamin
Berries contain vitamin c.
This type of bread has added vitamins.


mineral
Tin is a mineral.
Those countries are rich in mineral resources.