Perpetual debenture
[法] 永久债券
🧩 词语组成解析
🗣️ 情景例句
Because the United States is the most important trade partner.
因为美国是我们最重要的贸易伙伴。
The doctor said I looked worried and nervous.
医生说我看起来太忧郁和紧张了。
In 1975, a primitive machine called the Altair, was launched in the USA.
1975年，美国推出了一台被称为“牛郎星”的原始机型。