centering
词形变化：
同义词：
middle | heart | core | nucleus | hub | soul | residence | seat | basis | focus on | concentrate on | adjust | arrange | balance | home in on | place | position | turn on | axis | cluster | complex | downtown | centre | pith | mall | revolve around | shopping center | midpoint | inwardness | pore | rivet | sum | heart and soul | substance | gist | essence | nerve centre | center on | nerve center | focus | marrow | kernel | nub | revolve about | shopping centre | centerfield | snapper | nitty-gritty | halfway | center field | concentrate | eye | plaza | shopping mall | meat | midway | midst |
反义词：