1
have something
contain
the smallest part of an animal or plant
cell
to make something happen
cause
constant worry or pressure
stress
positive
usual
common
things that you do often or regularly
habit
sickness
disease
probable
likely
传播，传递
spread
happen
occur
make or create
produce
the foods you eat regularly
diet
is made up of
consist of
目标
goal
react by doing somthing
respond
work that involves studying something
reaearch
to stop something from happening
prevent
an idea used to explain something
theory
观察
observe
to join or connect to something
attach
protect
defend
a feeling about someone or something
attitude
give something or make it available
provide
欣赏
appreciate