He is most careful about his table manners.

他很注意自己的吃相。

Mary writes most careful in the class.

在班里，玛丽写得最认真。

Jim is the most careful boy in his class.

吉姆是他班里最仔细的男生。

The most careful research on these lines has given no result.

在这些方面的最认真研究并未得出任何结果。

We would suggest you to pay most careful attention to any business relation with them.

在您们双方的交易中,本公司建议您要特别留心.

Now for the eyes. I had left them to the last, because they required the most careful working.

现在要画眼睛了，我把它们留到最后，因为最需要小心从事。