放乳;
英文例句/中文翻译:
He trudged home feeling lonely and let down.
他步履艰难地往家走,感到孤独而沮丧。
Keep down! You mustn't let anyone see you.
蹲下!一定不要让人看见你。
Do not approved for a practice let-down, reason traffic density.
不同意做模拟(练习)穿云,因飞行秩序。