plod

vi.

1. 沉重緩慢地走[Q][（+on/along）]
   He plods away at his lessons until he learns them.

   他埋頭學習功課直到學會為止。

   The old man plods wearily along the road.

   那老翁邁著沉重的步子沿著大路疲乏地向前走。

2. 努力從事；埋頭苦幹[Q][（+away/on）]

vt.

1. 沉重緩慢地走（路）