原则yuán zé
principle, doctrine参与cān yù
to participate (in sth)参考cān kǎo
consultation, reference, to consult反复fǎn fù
repeatedly, over and over反应fǎn yìng
to react, to respond, reaction反正fǎn zhèng
to put things back in order反而fǎn ér
instead, on the contrary发愁fā chóu
to worry, to fret, to be anxious发抖fā dǒu
shiver, shudder, tremble, tremulous