Your Message must be between 10 and 160 characters.You must supply a valid country to enter the competition.You must select a country.三句各是什么意思?急!

Your Message must be between 10 and 160 characters.You must supply a valid country to enter the competition.You must select a country.三句各是什么意思?急!
Your Message must be between 10 and 160 characters.
You must supply a valid country to enter the competition.
You must select a country.
三句各是什么意思?急!

Your Message must be between 10 and 160 characters.You must supply a valid country to enter the competition.You must select a country.三句各是什么意思?急!
第一句：你的留言必须要在10～160字之间
第二句：你必须填写一个有效的国家从而进入比赛.
第三句：你必须选择一个国家

Your Message must be between 10 and 160 characters.
你的信息必需在10至160个字之间。
You must supply a valid country to enter the competition.
你必需提供一个有效的国家来进入比赛。
You must select a country.
你必需选择一个国家。