The sclereids contain crystals, calcium oxalate sandcrystals, the number, size, shape of resin ducts can be considered as the characters of powder.
粉末特征中三者所含石细胞、草酸钙砂晶、树脂道的多少、大小和形状均有差异。
2
There are traces of sand, mixed with crystals of gypsum. A typical mix picked up from walking the city of Boston.
地板上还有不少混合着石膏结晶的沙粒，这是在波士顿步行不可避免会带上的痕迹。
3
Soft tones of Sand Opal, Moonlight and White Opal crystals glimmer along with the elegant shades of Jonquil, Amethyst and Violet crystals on this necklace.