marl
n[U]
soil consisting of clay and lime, used as a fertilizer 泥灰(用作肥料).
??? 情景例句
Always full of surprises.
總是出人意表。
You don't need to interrupt!
不用你插嘴!
But here we come up against the most difficult of all obstacles to contact with people on other planets ----the astronomical distances which separate us.