🧩 词语组成解析
v. 踏；行走（step的过去式和过去分词）
line
[laɪn]
n. 线条;排;行列;界线;
vt. 排队;用线标出;沿…排列成行;给…安衬里;
vi. 形成一层;排队;击出平直球;
🗣️ 情景例句
But there's the old community center on Elm Street.
但是在Elm街有一个旧的社区中心。
I took one quart of oil.
我拿了一夸特油。
The nomads who made these markings lived by hunting and fishing during the last Ice Age which began about 35,000 B.C.and ended about 10,000 B.C.
这些痕迹是游牧人留下的，他们生活在从公元前约35，000年到公元前10，000年的冰川期的末期，以狩猎、捕鱼为生。