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单词
coal-fields
例句
DEFINITIVE EXAMPLES 权威例句
Most
coal-fields
began life as swamps about 300 million years ago.大多数煤田都是由大约三亿年前的沼泽地发展形成的。
剑桥国际
随便看
to bluff
to blunder
to blunt
to blur
to board
to boast
to boil
to boil down
to boil over
to bolt
to boo
to book
to book a room
to boost
to boot
to boot up
to border
to bore
to bore into
to boss
to bother
to bottom out
to bounce
to bounce back
to bound
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更新时间：2026/10/5 15:10:35