Tetrahydro
四氫化
??? 情景例句
Do you celebrate Christmas in China?
中國人慶祝圣誕節嗎？
There's a DC-10 out of LaGuardia Airport at 9:15 A.M.
上午9點15分有班DC-10號班機從拉瓜迪亞機場起飛。
What's the weather like today?
今天天氣怎么樣？