Ssto
abbr. single-stage to orbit 单极轨道
🗣️ 情景例句
He is tough to work with.
他很难共事。
She cried with shock.
她因受惊吓而喊叫。
She went into my room and got a big surprise when she saw all those books on the floor.
她走进我的房间，当她看到地板上的那些书时，大吃一惊。