- 不(no; not; negation)ASSOCIATIVE
A bird flying swiftly upward and never willing to return represents the meaning of swift and unyielding.
impassable
impassable
This is a line that cannot be crossed.
insurmountable
This is an insurmountable obstacle.
insuperable
A bird flying swiftly upward and never willing to return represents the meaning of swift and unyielding.
impassable
impassable
This is a line that cannot be crossed.
insurmountable
This is an insurmountable obstacle.
insuperable
A bird flying swiftly upward and never willing to return represents the meaning of swift and unyielding.
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