归还guī huán
to return sth, to revert当事人dāng shì rén
persons involved or implicated当初dāng chū
at that time, originally当前dāng qián
current, today's, modern, present当务之急dāng wù zhī jí
top priority job, matter of vital importance当场dāng chǎng
at the scene, on the spot当心dāng xīn
to take care, to look out当面dāng miàn
to sb's face, in sb's presence形态xíng tài
shape, form, pattern, morphology