subacoustic[ˌsʌbəˈku:stik]

adj.亚声速的

• relegate
• relevant
• reliability
• reliable
• reliance
• relief
• relieve
• relieved
• religion
• religious
• relish
• reluctance
• reluctant
• rely
• remain
• remainder
• remark
• remarkable
• remedy
• remember
• remind
• remnant
• remonstrate
• remote
• removal