1.wavy

even the trained eye could see nothing beyond the ordinary in the wavy lines being traced on paper to represent electrical waves from an animal's brain.

a.-long wavy hair=long curly hair

  -uneven by virtue of having wrinkles or waves

2.double up with

but he lay there alone for several minutes，dazed，double up with abdominal cramps and in an agony of retching.

将身体卷起来

double up with laughter 笑弯了腰

double up with pain 疼的蜷缩起来

3.gumshoe

n.-detective

-waterproof shoes