Sterilizing
v. 消毒( sterilize的現在分詞 ); 使無菌; 使失去生育能力; 使絕育
??? 情景例句
I'm happy to meet you.
很高興見到你。
Children learn to creep ere they can go.
孩子要走路，先得學爬行。
Once we get down to the oil, it usually flows to the surface because great pressure,
一旦到達油層，石油就會由于地下巨大的壓力流到地面上來，