For Lucy to get her decision right, she must put herself in Pete's shoes and think about what he must be thinking.

Lucy如果想要得到正确的决策，她必须把自己置于Pete的位置上，并思考他是怎样想的。

youdao

He really must be careful about thinking aloud. Who knew what he might say?

他真地得对自言自语小心点。谁知道他可能会说什么？

《柯林斯英汉双解大词典》

You must be thinking "he must be following a strict diet and spending tons of time on the treadmill" that can't be further from the truth.

你必须认为“他一定是按照严格的饮食计划并且花了大量时间在跑步机上”的说法是不靠谱的。

youdao

Sorrentino said he found himself thinking about eateries in the New Jersey area that lost electricity during Irene and now must be feeling a sense of deja vu.

FORBES: NJ Bank CEO: We're Running On The Backups To Our Backups

It could well be that he is thinking that if the rest of government is going to be tied down in gridlock the Fed must act with more aggressive efforts than it would like to.

FORBES: With The Election And Fed Uncertainty Soon Resolved, Grip Tightly For Stock Market Volatility