research

n.&vi.探讨，研究

reputation, repute, reputed, reputedly, request, request stop, requiem, require, requirement, requisite, requisition, requital, requite, reread, rerun, resale, rescind, rescission, rescue, rescuer, research into, researcher, reseat, resell, resemblance, resemble, resent, resentful, resentfully, resentfulness, resentment, reserior, reservation, reserve, reserved, reservedness, reservist, reservoir, reset, resettle,