无论做什么，衡量标准是有没有给自己长本事

• primitive

adj,way of life,belonging to a simple way of life that existed in the past and does not have modern industries and machines

a primitive society
the tools used by primitive man.

• batch

noun a group of things that are dealt with together

every day another batch of papers reaches the manager,demanding his attention.

• remainder (noun)

the part of something that is left after everything else has gone.

the remainder must be paid by the end of June

• dioxide (noun)

a chemical compund that contains two atoms of oxygen and one atom of another chemical element.

CO2 carbon dioxide