操场cāo chǎng
playground, sports field, drill ground支zhī
to support, to sustain, to erect支票zhī piào
check (bank), cheque收获shōu huò
benefit, reward改善gǎi shàn
to make better, to improve改正gǎi zhèng
to correct, to amend, to put right改进gǎi jìn
to improve, to make better