Upgradable
a. 能提到更高一级标准的(=upgradeable)
🗣️ 情景例句
before Michelle and her friends arrived.
在Michelle和她的朋友们来之前。
About ten minutes.
大约10分钟。
But instruments far more delicate than that were needed if any really serious advance was to be made.
但是，如果要取得真正重大的进展，需要有比这种装置精细得多的仪器。