hardmouthed

adj.

难驾御的，倔强的，顽固的；

Hard-mouthed tube provided with dual drug-loading interface for large volume soft transfusion bag
Anatomy of the Female Gentleman
Anatomy of the Female Gentleman
Riding The Problem Horse
The People's Historian: John Richard Green and the Writing of History in Victorian England by Anthony Brundage
ADJUSTABLE TRIGGER BIT
After the Wildfire
On Horsemanship / Xenophon
Retriever
Horse care and management