letterbox

n.

邮筒，邮政信箱；

复数：letterboxes

Letter-box
Letter box
Letter-box
Letterbox Finger
Letterbox finger
Automatic letterbox detection
Inside the letterbox: how literacy transforms the human brain
Inside the letterbox: how literacy transforms the human brain.
From Letterbox to Keyhole Approach for Resecting Intracranial Lesions
Letterbox Trailing Edge Heat Transfer: Effects of Blowing Rate, Reynolds Number, and External Turbulence on Heat Transfer and Film C...
The Letterbox Club: the impact on looked-after children and their carers of a national project aimed at raising achievements in lite...
Ineffective recruitment strategies for screening mammography: letterbox drops and invitations for friends.
Aerodynamics of a Letterbox Trailing Edge: Effects of Blowing Rate, Reynolds Number, and External Turbulence on Aerodynamic Losses a...