riddles的翻译，读音

n. 谜语；粗筛；谜一般的人（riddle的复数）
n a difficult problem
n a coarse sieve (as for gravel)
v pierce with many holes
v set a difficult problem or riddle
v separate with a riddle, as grain from chaff
v spread or diffuse through
v speak in riddles
v explain a riddle