Fallbacks
(fallback 的复数) n. 可依靠的东西, 退却\\n[计] 撤退
🗣️ 情景例句
Thank you.
谢谢你。
Did you go to the party yesterday?
你昨天去参加聚会了吗？
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。