Exercises
小学 Primaryn. 练习题, 演习；运动
🗣️ 情景例句
Sometimes there is,
有时候有，
It's snowing.
外面正在下雪。
But when the train dawdled at station after station, I began to wonder,
但是，当火车一站接着一站往前蠕动时，我便产生了怀疑。