sample area的用法和樣例：
例句
- At the level of species categories, the means mercury contents of macrobenthos at each sample point were higher in the creek than that under forest.
在動物類別水平上，各灘的潮溝樣地動物中的汞含量均值均大於相應林內樣地動物。 - The density and quantity of Collembola keeps high levels in infested area and even sometimes higher than non-infested area, especially in broad-leaved forest.
彈尾目在試驗樣地的密度和數量均保持較高水平，有時甚至高於對照，這在闊葉林表現尤為突出。
