helium什么意思解释？

Helium is a very light gas.氦是一种非常轻的气体。Helium is a gas used in balloons.氦是一种用于气球的气体.Unlike helium - 4, it cannot be produced by radioactive decay.与氦 - 4不同之处是, 氦-3不能由放射性衰变产生....

Helium is a very light gas.氦是一种非常轻的气体。A synthetic element produced in trace quantities by helium isotope bombardment of curium.锎一种合成元素,由氦同位素轰击锔可得到微量的这种元素.helium balloons for the children’s party儿童聚会用的氦气球Helium is a gas u...

helium的音标：helium的英式发音音标为：['hi:liəm]helium的美式发音音标为：['hiliəm]...

If we go on like this, we'll get nowhere.照这样下去是行不通的.You'll get nowhere if you follow his instruction.要是你按他的方法去做,将会一事无成.At first he was most dictatorial and aggressive in what he said, but when he realised that ...

anemometrograph的音标：anemometrograph的英式发音音标为：[ænɪmɒ'metrəʊɡrɑ:f]anemometrograph的美式发音音标为：[ænɪmɒ'metroʊɡrɑf]...

过时的， 陈旧的，年陈日久，老掉牙...

The six astronauts on board will spend ten days in space.飞船上的6名宇航员将在太空度过10天。On board were enough provisions for two weeks.船上有足够两周吃的食物。a PC with on-board sound有板上声卡的个人电脑...

“反振荡”的英语可以翻译为：antihunt ...

cure的音标：cure的英式发音音标为：[kjʊə(r)]cure的美式发音音标为：[kjʊr]...

n.轮廓，人物，身形，雕像，数字( figure的名词复数 )，算术，图解，轮廓vt.& vi.认定，计算，是重要部份，是…的部份...

二因子杂种...

扁甲总科...

adj.大肚子的，肥胖的...

erect的反义词有：demolish, ruin, destroy, demolish, ruin, prone, destroy。vt.erect的反义词（树立;建立）：demolish, ruin, destroy。erect的反义词（其他释义）：demolish, ruin, prone, destroy。...

n.储蓄，存款，保证金，沉淀物，寄存，寄存品vt.&vi.储蓄，寄存，放置，安置，付保证金vi.沉淀...

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Angela stared pensively out of the window.安杰拉忧郁地望着窗外。Alice gazed pensively through the wet glass...艾丽斯透过湿漉漉的玻璃神情忧郁地凝视着窗外。Alice gazed pensively through the wet glass.艾丽斯透过湿漉漉的玻璃神情忧郁地凝视着窗外。Garton pensively stirred the hotc...

鲣鸟栖息在外海地区。Gannets are denizens of the open ocean.许多水鸟在岛上栖息.A great number of water fowls dwell on the island.这对天鹅栖息在河边.The pair of swans nested by the river....