filling tissue的用法和樣例：
例句
- It is constantly replaced by newly formed cells as the older tissue is sloughed off with growth of the root through the soil.
隨著根尖的生長，根冠外層的薄壁細胞與土壤顆粒磨擦，不斷脫落，死亡，由其內的分生組織細胞不斷分裂，補充到根冠，使根冠保持一定的厚度。 - When the mosses are insufficient, tissue culture of mosses is a supplementary work worthy of consideration for expanding the resources of mosses.
用組織培養的方法增加蘚類的數量是擴大蘚類資源的一種有效補充辦法。
