Terrestrial guidance
[航空学]地球基准导引
🧩 词语组成解析
🗣️ 情景例句
before getting to the tough stuff--math.
在对付难缠的东西 数学 之前。
The two contestants are neck and neck with 20 points each.
比赛双方各得20分，打成平局。
Bad luck! said Mother. It doesn't matter!
“真糟糕！”妈妈说，“没关系！”