Bilene
次甲基胆色素
🗣️ 情景例句
If you quit smoking now, you'll feel better in no time.
如果你现在戒烟的话，你很快就会感觉好多了。
He often plays golf.
他常常去打高尔夫球。
That machine joins these different pieces of metal together.
那台机器把这些不同的金属片焊接起来。