Cephalanthin
风箱树素
🗣️ 情景例句
Is that a proposal, or are we just playing a game?
这是求婚呢 ，还是仅仅在玩游戏？
That deep sigh could only express Helen's sadness.
那深深的叹息，不外乎表示出海伦的悲哀。
In this way, we have learned all that we know of the laws of astronomy,
例如，用这种方法，我们完全掌握了天文学的规律。