请给讲一下这句英语的讲法现象.
问题描述：
请给讲一下这句英语的讲法现象.
Under some conditions,snowflakes can form that are five centimeters across.
答
这个句子不完整.好像应该是：Under some conditions,snowflakes can take the form that are five centimeters across.或者：Under some conditions,snowflakes can be in the form that are five centimeters acros...