用法:
1 ~ (to sb/sth) person or thing that hinders or obstructs the progress or movement of sth 妨碍、 阻碍某事物进展或活动的人或物:
The main impediment to growth was a lack of capital. 影响发展的主要障碍是缺乏资本.

用法:
2 physical disability of a specified type; defect 身体上的某类残疾; 缺陷:
a speech impediment, eg a lisp or a stammer 言语障碍（如口齿不清或口吃）.

• telephone (also phone)
• telephone box (also `phone box, `telephone booth, `phone booth, `call-box)
• telephone directory (also `telephone book, `phonebook)
• telephone exchange (also exchange)
• telephone number (also `phone number)
• telephone operator
• telephonic
• telephonist
• telephony
• telephoto
• telephotographic
• telephotography
• telephoto lens
• teleprinter
• teleprompter
• telescope 1
• telescopic
• telescopically
• teletext
• teletypewriter
• televise
• television
• telex 1
• tell
• teller