closely-packed code

例句：

1. 1. The tightly-packed code of the data was difficult to decipher.
   数据中的紧密编码难以破解。
2. 2. The team used a closely-packed code to hide their secret information.
   团队使用紧密编码来隐藏他们的机密信息。
3. 3. The engineers were able to crack the closely-packed code using advanced encryption techniques.
   工程师们利用高级加密技术破解了紧密编码。