🗣️ 情景例句
Practice tenses as much as possible.
操练各种时态。
He that lies down (sleeps) with dogs must rise up with fleas.
与恶人交终会变恶；近朱者赤，近墨者黑。
some drifting and slow, others jerky and rapid.
这些活动有的飘忽而缓慢，有的急剧而快速。