Mear
边界
🗣️ 情景例句
I can't eat another bite.
我一口也吃不下去了！
You walk so fast that I can't keep up with you.
你走得太快，我跟不上你。
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。