Density of gases
[机] 气体密度
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
n. 气体
🗣️ 情景例句
Are you carrying any items that need to be declared?
你没有携带需要申报的东西吗？
Life is half spent before we know what it is.
等到认识人生，已经一半过去了。
The baby was about ten months old. At first she was asleep.
那小孩大约10个月大。最初，她是睡着的。