记者秘密潜入那个非法组织收集证据。

The journalist ___infiltrated the illegal organization to gather evidence.

墨水慢慢渗入纸张纤维，使得字迹难以擦除。

The ink slowly ___infiltrates the paper fibers, making the writing hard to erase.

这种新型技术正逐渐渗入我们的日常生活。

This new technology is slowly ___infiltrating into our daily lives.