音标：['fri:'sɔil] ；

a. 无奴隶制的

s. where slavery was prohibited

【近义词】

non-slave无奴隶制的
slaveless无奴隶制的

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These hardworking houseplants can sweeten every breath you take . Put Your Plants to Work In the early 1980s, when NASA researchers were looking for ways to purify the air inside the space pods of the future , they didn ' t just look to engineer a pr

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学英语单词

astronomic(al) bearing

carriage of deck cargo

central nave