英语听力精选进阶版 13947（在线收听）

Artist has camera implanted into his scalp

Vocabulary

surgical procedure

medical operation

tuck

put something into a convenient place

an inch thick

a depth equivalent to about 2.54 centimetres

beamed

sent out a radio or electrical signal

displayed

shown

vowed

promised

to go about his daily life

to continue his daily life

tricky

difficult

sitting upright

sitting straight, on the vertical

drying up

are becoming rare