Toxaphene
[醫(yī)] 毒殺芬, 氟化莰烯, 毒氣萜(一種人工合成氟代烴類殺蟲劑)
??? 情景例句
How long?
多久？
He who is ashamed of asking is ashamed of learning.
恥于問者恥于學。
probably vertical, cliffs, and gentle sediment-covered terraces,
乃至垂直的峭壁和沉積物覆蓋的緩和的階梯地帶，