Indentured
v. <史>以契约束缚（学徒）( indenture的过去式和过去分词 )
🗣️ 情景例句
you know,
你知道的，
I had no idea.
真没想到。
They put their hands behind their backs, so you can't see their hands.
他们将手放在背后，这样你就看不见他们的手了。