pullback

n.

撤退，拉回，障碍物；

1. No one expected the recent significant pullback of retail stocks.
   近日零售业股价大幅拉回出乎预期。
2. This pullback in optimism constrains growth and slows innovation.
   这次乐观主义制约经济增长撤退，并减缓创新。

Pullback
Pullback and Pushout Constructions in C*Algebra Theory
Pullback attractors of nonautonomous dynamical systems
On equalizer-flat and pullback-flat acts
On equalizer-flat and pullback-flat acts
Pullback attractors for non-autonomous 2D-Navier–Stokes equations in some unbounded domains
Double-Pullback Transitions and Coalgebraic Loose Semantics for Graph Transformation Systems
On the Class Group and the Local Class Group of a Pullback
Exponentiable morphisms, partial products and pullback complements
In vivo validation of intravascular ultrasound length measurements using a motorized transducer pullback system ☆