Dr. mishori says some people mistakenly believe they can become resistant to colds .
米歇里博士说,一些人错误地认为他们可以抵抗感冒。
Be sure to pound on a surface that can safely withstand the force and is resistant to damage .
确保要在一个能安全承受捶打力度和抵抗破坏的操作面上捶打。
Roadside bombs remain a major threat in afghanistan , but the mine resistant ambush protected vehicles first fielded in iraq often proved too heavy for afghanistan 's primitive roads and mountainous terrain .