Pickeringite
镁明矾
🗣️ 情景例句
and it is on a half-acre lot.
用地半英亩。
Can you picture yourself on a boat, on a river?
你能想象你自己泛舟河上的情景吗？
For our purposes, we are concerned only with one kind of cost----
就我们的目的而言，我们只关心一种费用-