He tried to push his hand through the gap but it wouldn't go.

他试着把手伸进豁口，可就是伸不进去。

《牛津词典》

Take a deep breath in through your nose, and let your belly push your hand out.

用鼻子深吸一口气，然后让腹部推起你的手。

youdao

In other words, smart would-be entrepreneurs need both a push and a helping hand.

换言之，这些聪明的打算创业的年轻人需要鼓励和援助之手。

youdao

Soon after the re-start the France pack drove the seven-man Namibia pack back over their own line to hand a push-over try to Bonnaire before Chabal, who has become a French folk hero in recent months, exploded into life.

BBC: France 87-10 Namibia

On the other hand, push-back such as the video of a 3-year-old masterfully navigating the Metro interface makes the wrong point.

ENGADGET: Editorial: Turning point for the tortoise and the hare

It did not take long for Smith to be called into action for the first time, as the replacement made a good save low to his left-hand side, to push a searing Sean Dillon shot around the post.

BBC: SPORT | Football | Scottish Premier | Dundee United 0-0 Motherwell