Ech
abbr. echelon 梯形，梯次编队
🗣️ 情景例句
But it's not going to be easy.
不过这事可不容易。
The land in this region is dry and parched.
在这个区域的陆地是干燥炎热的。
and his hero was firmly rooted in his memories and experiences, and in both the history and the mythology of the vanished frontier.
他塑造的英雄人物深深地扎根于他本人的记忆和经历之中，也扎根于有关已经消失的拓荒生活的历史和神话之中。