theoretically: 从理论上说
Congress needs to vote on its admission, which could theoretically occur at any time.
美国国会需要对其加入进行投票，理论上这随时都可以进行。
If prices rise by just a little, the value of those assets would theoretically rise too.
如果价格小幅攀升，这些资产的价值理论上也会增长。

pick up: 接送
Where do I pick up my baggage?
我在哪里提取我的行李？
And seeing as I live further uptown than you I could, theoretically, pick you up.
鉴于我比你住得更远，我可以理论上说可以去接你。