✅ 同义词
🔴 反义词
🗣️ 情景例句
The baby-sitter called.
临时保姆打电话来了。
I did Math this morning.
我今天早上做算术。
they can locate and steer clear of obstacles -- or locate flying insects on which they feed.
并能通过回声来确定并躲开障碍物，或找到它们赖以为生的昆虫。