✅ 同义词
🗣️ 情景例句
If you need any help, I'll be ust over here.
如果你需要任何帮助,我都随时待命。
I want to be a pilot of possible.
如果可能的话,我想做个飞行员。
a wave length (the horizontal distance between two wave crests),
波长(两个浪峰间的水平距离)