Perfluoroisobutylene
全氟异丁烯
🗣️ 情景例句
Is that all?
就这些吗？
Love is the touchstone of virtue.
爱情是美德的试金石。
Unlike most of his contemporaries in Hollywood, Hart actually knew something of the old West.
哈特与大部分同时代在好莱坞的演员不同，他确实了解西部早期拓荒生活的一些情况。