Mainboom
n. 系主帆的帆角的圆木
🗣️ 情景例句
I know.
我知道。
What's your friend doing?
你的朋友正在做什么？
George took off his jacket, rolled up his sleeves and pushed is right arm through the drain cover.
乔治脱掉外套，卷起袖子，将右胳膊伸进了阴沟盖。