Osteogen
成骨质
🗣️ 情景例句
when you called me.
当你打电话给我的时候。
I'm afraid she's not here.
很抱歉，她不在。
But a watch could never repair itself----it does not consist of living parts,
但是，手表决不会自行修理，它不是由有生命的部件组成，