It was a white envelope.

那是一个白色的信封。

youdao

The following morning, when I went out to collect the mail, I found a white envelope with the magical words, "Buy yourself a new bicycle". There was a $100 banknote inside.

第二天早上，我出去收邮件，发现了一个白色信封，上面写着“给自己买辆新自行车”这几个神奇的字。信封里有一张100美元的钞票。

youdao

The white envelope read:’ Sophie Amundsen, 3 Clover Close.

白色的信封上面写着：“苏菲.阿蒙森 苜蓿巷3号.”

youdao

"It is in a white envelope with a red stamp," Germont said.

VOA: special.2009.12.26

In the car park, I observed that Williams had a white envelope in his left hand.

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Mr Williams's home was raided the next day and police found a white envelope under his mattress, jurors were told.

BBC: CCTV still of Miles Rodgers

In the right pocket of his shorts, police found a small plastic envelope containing a white powder.

WSJ: Police Probe Florida Pastor's Death