Paleopedology
n. 古土壤學
??? 情景例句
Is it too late to cancel our plans?
現在取消我們的計劃是否太遲了？
My mouth is watering.
我在流口水。
namely 6 million million miles.) Radio waves also travel at the speed of light,
即6萬億英里）。無線電波也是以光速傳播的。