30英文

1-10 :one two three four five six seven eight nine ten11-19：elven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen20-29：twenty twenty-one twenty-two twenty-three...twenty-nine30:thirty

one two three four five six seven eight nine ten11-19：elven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen20-29：twenty twenty-one twenty-two twenty-three...twenty-nine30:thirty