Pentamethylenetetrazole
戊撑四唑
🗣️ 情景例句
After forty-eight hours.
四十八小时后。
I was just about to call you.
我正准备打电话给你。
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。