为防止疾病，始终用干净的手处理食物。

Always ___handle food with clean hands to prevent illness.

在一些文化中，人们通常用手处理食物。

In some cultures, people commonly ___handle food with their hands.

请小心拿放这个古董花瓶；它非常易碎。

Please ___handle the antique vase carefully; it's very delicate.