one thousand five hundred數(shù)字表示可以從右到左三位三位一個(gè)逗號(hào)，第一個(gè)逗號(hào)是thousand（千），第二個(gè)是million（百萬(wàn)）,第三個(gè)是billion（十億）,三位數(shù)字就按照百位讀即可。eg 5,132 讀作five thousand one hundred and thirty-two 21,094讀作twenty-one thousand and ninety-four 12,420,864讀作twelve million four hundred and twenty thousand eighty hundred and sixty-four 123,423,998,010讀作one hundred and twenty-three billion four hundred and twenty-three million nine hundred and ninety-eight thousand and ten

He participated in distance running 1500 meters.

ometimes I have thought it woul

這個(gè)不好說(shuō)，但是一般情況下會(huì)要比這1500多漢字要多。比如說(shuō)聯(lián)合國(guó)的會(huì)議記錄永遠(yuǎn)是用中文寫(xiě)的那個(gè)文件最薄。

15 million (fifteen milion)

hybrid sterility雜種不育性macroevolution宏觀進(jìn)化，種外進(jìn)化microevolution微進(jìn)化，種內(nèi)進(jìn)化parallel evolution平行進(jìn)化phylogeny種系發(fā)生，系統(tǒng)發(fā)生，系統(tǒng)發(fā)育punctuatedequilibrium間斷平衡sympatricspeciation同域物種形成，同地物種形成，分布區(qū)重疊物種形成

( There ) are ( at) ( least) 1500 students in our class.

老師約150人學(xué)生1500人about one hundred and fifty teachers, one thousand five hundred students

fifteenthousandand two point eight eight