laborious 费力的 艰难的 arduous,  painstaking
Anne received a raise for her laborious  efforts.
presipitous 陡峭的 急躁的 sheer, extremely  steep
devious 曲折的 circuitous
The teacher gave us a devious explanation  at first which confused us for a long time.
arduous 险峻的 困难的 difficult, strenuous,  laboriious, back-breaking
The preparation for GRE is as long and as  arduous work for a normal undergraduate.
strenuous 辛苦的 energetic, laborious
It is really a strenuous job be get well  prepared for a GRE test.
plight (恶劣的)情势 困境  predicament,dilemma
I cried when I heard of the refugees'  plight.
strait 困难
painstaking 辛劳n 劳苦的 careful,  scrupulous
dilemma 左右为难 困境
I have the dilemma of choosing a new car or  a new computer.
flounder 挣扎 （比目鱼）
The economy in southeast Asian continuse to  flounder.
embarrass 使困窘
Anne's older brother tried to embarrass her  in front of her friends.