请把这些中文译成英文世界上最高的山峰是珠穆朗玛峰世界上最长的河流是尼罗河世界上最长的城墙是长城澳大利亚是世界上最大的岛锦

The world's highest mountain is Mount Everest
The world's longest river is the Nile
The world's longest wall is the Great Wall
Australia is the world's largest island
Splendid China is the world's largest model of park
The Dead Sea is the world's most salty sea