We can also give a hand to others.

我们也可以给别人一只手。

Give a hand to anyone.

伸出援手，给某人。

When I am in trouble, they always give a hand to me.

当我遇到困难的时候，他们总是给我帮助。

So please give a hand to the people in need carefully.

所以请小心的帮助需要帮助的人。

The results may give a hand to the practice in this field.

所得结论对工程实践有一定的指导作用。