从文章里挑出还没掌握的词，附出现次数与上下文句子
By noon the ridge had vanished behind a wall of cloud, and the guide admitted that the map was older than either of the…
The expedition left the valley before dawn, carrying little more than dried food and a compass that had already begun t…
The expedition left the valley before dawn, carrying little more than dried food and a compass that had already begun t…
By noon the ridge had vanished behind a wall of cloud, and the guide admitted that the map was older than either of the…
The expedition left the valley before dawn, carrying little more than dried food and a compass that had already begun t…
By noon the ridge had vanished behind a wall of cloud, and the guide admitted that the map was older than either of the…
The expedition left the valley before dawn, carrying little more than dried food and a compass that had already begun t…
The expedition left the valley before dawn, carrying little more than dried food and a compass that had already begun t…
The expedition left the valley before dawn, carrying little more than dried food and a compass that had already begun t…
The expedition left the valley before dawn, carrying little more than dried food and a compass that had already begun t…
By noon the ridge had vanished behind a wall of cloud, and the guide admitted that the map was older than either of the…
They simply walked more slowly, stopping every hundred paces to listen for water.
The expedition left the valley before dawn, carrying little more than dried food and a compass that had already begun t…
The expedition left the valley before dawn, carrying little more than dried food and a compass that had already begun t…
By noon the ridge had vanished behind a wall of cloud, and the guide admitted that the map was older than either of the…
They simply walked more slowly, stopping every hundred paces to listen for water.
The expedition left the valley before dawn, carrying little more than dried food and a compass that had already begun t…
They simply walked more slowly, stopping every hundred paces to listen for water.
The expedition left the valley before dawn, carrying little more than dried food and a compass that had already begun t…
By noon the ridge had vanished behind a wall of cloud, and the guide admitted that the map was older than either of the…
Nobody panicked.
By noon the ridge had vanished behind a wall of cloud, and the guide admitted that the map was older than either of the…
By noon the ridge had vanished behind a wall of cloud, and the guide admitted that the map was older than either of the…
They simply walked more slowly, stopping every hundred paces to listen for water.
Nobody panicked.
By noon the ridge had vanished behind a wall of cloud, and the guide admitted that the map was older than either of the…
They simply walked more slowly, stopping every hundred paces to listen for water.
They simply walked more slowly, stopping every hundred paces to listen for water.
They simply walked more slowly, stopping every hundred paces to listen for water.
The expedition left the valley before dawn, carrying little more than dried food and a compass that had already begun t…
By noon the ridge had vanished behind a wall of cloud, and the guide admitted that the map was older than either of the…
They simply walked more slowly, stopping every hundred paces to listen for water.
By noon the ridge had vanished behind a wall of cloud, and the guide admitted that the map was older than either of the…
They simply walked more slowly, stopping every hundred paces to listen for water.
生词表按出现次数排序，每行附上该词第一次出现的句子——背词时能带回原文语境，比孤立的词表更容易记住。
虚词（a / the / of / 的 / 了…）默认不进入生词表。中文按单个汉字统计，日文假名不参与统计。