“第一”怎么读？

他们的完整目录售价5美元，第一次订购时可返还这5美元。Their full catalogue costs $5, redeemable against a first order.他写第一本书得到了400元“巨款”.For his first book he received the princely sum of $ 400.他买这房子第一期付款10万元.He made a down payment of $ 100, 000 fo...

“第一”的英语可以翻译为：first，primary，foremost，first and foremost，firstly ...