“新西兰在澳大利亚的东南部”用英语怎么说？

New Zealand is in the southeast of Australia

new zealand is to the southeast of australia
用to，不用in
in的话就表示新西兰在澳大利亚里面了

New Zealand is on the southeast of Australia .

应该用“on”

新西兰不与澳大利亚接壤，应该用“on”！

范围内用“in”，范围外用“on”，接壤用“to”