天气预报上说多云并伴有阵雨。The weather forecast is for showers and overcast skies.一场短时强阵雨后风势渐长。There was a short sharp shower followed by a strengthening breeze.今天下午天气晴好，间有零星阵雨。There'll be bright or sunny spells and scattered sh...
The number of cationic bromine and chlorine compounds is restricted.溴、氯阳离子化合物的数量受局限.Derivatives of bromine are much more active than the corresponding one of chlorine.溴的衍生物的活性要比相应的氯的衍生物大得多.The existing bromine in acetic ...
Of necessity they are sited near the coasts or tidal water.它们的位置不可避免地都靠近海岸线或靠近潮水河流.The fence is strategically sited to prevent anyone getting onto the beach.这个围栏的地点选择得很有策略,可以阻止任何人到海滩上.He said chemical weapons had never b...