ponder over

v.

沉思，深思；思考；思前想后；

Ponder over “Hit-and-Run”
Ponder Over Urban Plantation Ecology
Ponder over the College Students Multi-layer Medical Insurance
Ponder over Preventive Measures for Fire Disaster in the Subway
Ponder over the Training Program of the Safety Engineering Discipline
Ponder over the Establishment of Road Traffic Crisis Management System
Ponder Over the Problem of Finding Places for Retired Athletes in China
Current Status and Ponder over the Management in Construction Safety
The Ponder over Clinical Analysis with Syndrome Differentiation for 190 Cancer Patients
Ponder over the contemporary preschool physical education from visual angle of post-modernism