As soon as he returned to the laboratory, he slogged hard.

他一回到实验室就埋头苦干了起来。

John slogged his opponent and knocked him to the ground.

约翰猛击对手，将他打倒在地。

We cannot deny his hard slog during this period because of this small mistake.

我们不能因为这点小失误就否定他这段时间的艰苦努力。

Writing the book took ten months of hard slog.

这本书是苦熬十个月写出来的。

It was a long slog to the top of the mountain.

到山顶的路漫长而艰难。

He started to slog his way through the undergrowth.

他踏上了穿越林莽的艰难征程。

There is little to show for the two years of hard slog.

这两年的埋头苦干没有什么可展示的。

America faces a long, hard slog.

美国面临着一条长而艰难的道路。