Three lines的用法和樣例：
例句
- Hunter pets can now learn talents in one of three trees depending on family.
獵人的寵物現在擁有三系天賦樹(shù)，具體由寵物的種類(lèi)決定。 - Some materials such as multi-pistils can be used as a basic line for the wide-compatibility sterile lines breeding.
多雌蕊等材料可為選育廣親和三系不育系提供基礎材料。
