Alex: He must practice a lot.

阿莱克斯：他一定花了很多时间练球。

If you want to be a successful musician, you have to practice a lot!

妳如果想要成为成功的音乐家，就必须常常练习！

Practice a lot, starting long before in an environment similar to the real performance.

反复的练习，尽早开始在一个与真实表演场景相似的环境中训练。

It is necessary to practice a lot in order to obtain precision and a feeling for the hold of the tools.

为了找到握持冰镐的感受和掌握精确的动作，练习是必要的。