差异(chāyì) difference

大致(dàzhì) roughly

观摩(guānmó) view and emulate

庞大(pángdà) huge; enormous

考察(kǎochá) inspect; investigate

抽调(chōudiào) transfer

口号(kǒuhào) slogan

挑(tiǎo)战(zhàn) challenge