n.wet spongy ground of decomposing vegetation; has poorer drainage than a swamp; soil is unfit for cultivation but can be cut and dried and used for fuel
同义词：peat bog
v.
cause to slow down or get stuck
"The vote would bog down the house"
同义词：bog down
get stuck while doing something
"She bogged down many times while she wrote her dissertation"
同义词：bog down
英汉双解大词典
bog/bɒɡ/star2CET6+ TEM8(bogs)
1.
N-COUNT（可数名词）
A bog is an area of land that is very wet and muddy. 沼泽