我必须指出新药的试验很昂贵，而且你永远不能保证成功。

I must point out that trials of new medicine are expensive and you can never guarantee success.

youdao

对于你个人对于成功的定义做一个思考，然后把它写下来，我保证你马上会觉得离成功更近了一步。

Discover your personal definition of success and write it down. I promise that you will feel more successful immediately.

youdao

如果你是这样的人，我并不保证你能成功。

And if you are, I don't guarantee success.

youdao