Test for contamination
[化] 污染试验
🧩 词语组成解析
for
[fɚ]
prep. 为，为了;倾向于;关于;当作;
conj. 因为，由于;
contamination
[kənˌtæmi'neiʃən]
n. 污染;弄脏;毒害;玷污;
🗣️ 情景例句
By plane?
坐飞机来？
There are seven of us altogether.
一共有7个。
Thus one simple fact, a change in the number of bison, had an effect on the whole wildlife chain of the plains.
因此，出现了这样一个简单的事实--野牛数目换的变化对平原的整个野生生物链都产生了影响。