Cerium
n. 铈\\n[化] 铈Ce
🗣️ 情景例句
I want to keep the after-school programs--
我要保存这些课外活动--
I had thought he knew the time of the meeting.
我原以为他知道开会时间。
Our knowledge of the oceans a hundred years ago was confined to the two-dimensional shape of the sea surface and the hazards of navigation presented by the irregularities in depth of the shallow water close to the land.
100年前，我们只知道海洋是二维平面形的，以及靠近陆地浅水区的深浅不一能给航行带来危险。