他此刻正在南美旅游观光。He's touring South America at this moment in time.我们的旅游报价和那些度假手册里的价格相去甚远。Our tour prices bore little resemblance to those in the holiday brochures.旅游火了，工作机会多了，个人收入涨了。Tourism is up, jobs are up, individua...
The microgel particles the research team hae deeloped are like'smart sponges'when dispersed in water.微凝胶体研究小组已经研究出在水中分散的类似 “ 漂亮的海绵 ”.The hydrophilic colloids are readily dispersed in water.亲水胶体很容易分散在水中.The poli...