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Its width is one tenth of a hair. It equals the width of a hair. It is as thin as a piece of paper. Its width is too tiny to measur
Its width is one tenth of a hair. It equals the width of a hair. It is as thin as a piece of paper. Its width is too tiny to measure.
Broaden. Spread. Extend. Expan
It is finding ways to get rid of viruses. It is mass-producing micro-batteries. It is making batteries with viruses. It is analyzing virus genes.
What, to see How, seeing What, seeing How, to see
kill microorganisms related to chicken pox, the flu, etc. keep themselves away from viruses because they are invisible stay away from viruses because they are causes of various diseases cure themselves of virus-related diseases by taking medicines
kill microorganisms related to chicken pox, the flu, etc. keep themselves away from viruses because they are invisible stay away from viruses because they are causes of various diseases cure themselves of virus-related diseases by taking medicines
could do should do must have done could have done
It is finding ways to get rid of viruses. It is mass-producing micro-batteries. It is making batteries with viruses. It is analyzing virus genes.
Broaden. Spread. Extend. Expand.
one week two weeks four days three weeks
could do could have done must have done should do
It is made of metal. It is a kind of watch battery. It can only be seen with a microscope. It is a metallic disk with viruses inside it.
It is made of metal. It is a kind of watch battery. It can only be seen with a microscope. It is a metallic disk with viruses inside it.
could could have done must have done should do
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