Smell is tougher to implant than colour because it not only matters whether a plant can make odoriferous chemicals, it also matters what it does with them.
Smell is tougher to implant than colour because it not only matters whether a plant can make odoriferous chemicals, it also matters what it does with them.
在花中加入香味要比加入颜色难，因为前者涉及植物能否合成有味化学物质以及如何处理这些化学物质。