oxygen /'ɔksidʤən/
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(hoá học) Oxy
Các câu ví dụ:
1. Sherpas, high altitude guides and workers drawn from the indigenous local ethnic group, carry heavier items including tents, extra oxygen cylinders and ropes up the mountain - and then down again.
2. As rising numbers of coronavirus infections worry the population, some decided to purchase ventilators and oxygen tanks themselves as a precautionary measure.
3. The report in Proceedings of the National Academy of Sciences says the moss mantle began to proliferate about 470 million years ago, providing our planet with the first stable source of oxygen and enabling intelligent life.
4. ""Our study shows that the earliest land plants were amazingly productive and caused a dramatic increase in the oxygen content of the Earth's atmosphere.
5. " oxygen first appeared in Earth's atmosphere about 2.
Xem tất cả câu ví dụ về oxygen /'ɔksidʤən/