Steepened
v. （使）变得陡峭( steepen的过去式和过去分词 )
🗣️ 情景例句
and he kept talking about having a house of our own.
他老说要有自己的家。
Choose an author as you choose a friend.
选书如择友。
records only the horizontal component of the wave movement,
记录下来的只是地震波运动中的水平部分，