特工成功渗透进犯罪集团内部，收集了大量证据。

The agent successfully carried out the ___infiltration of the criminal organization and gathered crucial evidence.

长时间的雨水渗透导致地下室墙壁出现了裂缝。

The prolonged ___infiltration of rainwater caused cracks in the basement walls.

社交媒体上虚假信息的逐渐渗透正在影响公众的判断。

The ___infiltration of false information on social media is affecting public judgment.

肺部X光片显示有白细胞浸润的迹象。

The chest X-ray revealed signs of white blood cell ___infiltration.