Etu
abbr. electron tube 电子管; ethylene thiourea 乙烯基尿素
🗣️ 情景例句
I'm of the same opinion.
我也是这个意见。
The population of Africa is growing by leaps and bounds.
非洲的人口正在极其迅速地增长。
What bad weather! Are you going out?
天气糟透了！你要外出吗？