spyhole

n.

观察孔；

1. We can see the outside from the spyhole.
   透过这个窥视镜我们可以看到门外面的景象。

SPYHOLE VIEWER
Spyhole viewer
Spyhole Secrets. (fiction).
A Spyhole for Leering at Life
On-chip spyhole mass spectrometry for droplet-based microfluidics.
On‐Chip Spyhole Mass Spectrometry for Droplet‐Based Microfluidics
Journal Highlight: On-chip spyhole mass spectrometry for droplet-based microfluidics
On-Chip Spyhole Nanoelectrospray Ionization Mass Spectrometry for Sensitive Biomarker Detection in Small Volumes
Man Hid in Friend's Loft to Watch Sex through Spyhole; He Even Brought a Flask and Sandwiches
Tycoon Hid in His Ex-Lover's Shed for 10 Days to Rape Her; Chilling: A Spyhole in the Shed Beauty and the Beast: Susan George, and M...