He may have been to some of those places.那些地方他也许去过一些。Those who have been to Dalian all say it's beautiful.凡是去过大连的人都说大连很美.I have been to see John.我去看过约翰了....
The best thing to do when entering unknown territory is smile.踏入未知地带最好的对策就是微笑。It is not unknown for valuable display items to go, ahem, missing.贵重的展品，呃哼，丢失的话，会众人皆知。Ignorance of people brings fear, fear of the unknown.人们的...
The imidazoline was synthesized from black acid liquid.以酸性黑油为原料合成咪唑啉.Then the imidazoline boric acid ester was synthesized when the intermediate reacts boric acid.采用两步法合成月桂酸味唑啉硼酸酯....
年代较近的针叶树林场还比不上年代久远的林场。The more recent conifer plantations cannot yet compare with the old woodlands.他们除去了林场中多余的树木,以利来日森林长得更茂密.They thinned out a stand to create a lush forest tomorrow.在这种形势下, 国有 林场该怎么办?Below this kind of...