The South African mailboat arrived on Friday mornings unless bad weather intervened.除非受恶劣天气干扰，南非邮船一般在星期五上午抵达。...

mailboat的音标：mailboat的英式发音音标为：['meɪlbəʊt]mailboat的美式发音音标为：['meɪlˌboʊt]...

n.（装运邮件的）邮船...