a sad dog

aspirated fan stage sad compressor

bad-i-sad-o-bistroz

BAD-I-SAD-O-BIS-TROZ

hilly sad gaily region at the Lees Plateau

in sad earnest

in situ SAD

make sad work of it

sad

sad and shrill

sad apple

SAD distribution

SAD distribution in spatial domain

SAD domain

sad melody

Sad poetry

sad sack

Speech activity detector SAD

S-SAD

Sum of Absolute Difference SAD