B-complex
其它 Other复合维生素b
🧩 词语组成解析
🗣️ 情景例句
Oh,
噢，
I heard you.
我听到了啦。
Our knowledge of the oceans a hundred years ago was confined to the two-dimensional shape of the sea surface and the hazards of navigation presented by the irregularities in depth of the shallow water close to the land.
100年前，我们只知道海洋是二维平面形的，以及靠近陆地浅水区的深浅不一能给航行带来危险。