拓展

拓展	tuò zhǎn	to expand; to extend; to broaden (client base, outlook, territory etc) / (computing) to scale up; to increase system capacity
拓	Tuò	surname Tuo
拓	tà	to make a rubbing (e.g. of an inscription)
拓	tuò	to expand / to push sth with the hand / to develop / to open up
展	Zhǎn	surname Zhan
展	zhǎn	to spread out / to open up / to exhibit / to put into effect / to postpone / to prolong / exhibition