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
v cause to slow down or get stuck
v get stuck while doing something
n. 沼泽, 泥塘( bog的名词复数 ); 厕所
v. （使）陷入泥沼, （使）陷入困境( bog的第三人称单数 ); 妨碍, 阻碍