to develop resistance to a disease
развить сопротивление болезни (razvit' soprotivlenie bolezni)
"Vaccines help your body build immunity to dangerous viruses."
"вакцины помогают вашему телу развить сопротивление опасным вирусам." (vaktsiny pomogayut vashemu telu razvit' soprotivlenie opasnym virusam)
to find something or someone unexpectedly
to take measures to defend from threats or attacks
to stop taking medicine
to come to terms with failure as part of life
to overcome fear and act with courage
to leave school or university before finishing the course