Ffb
abbr. fat-free body 脫脂體，無脂肪體
??? 情景例句
He has realized how precious health is.
他已經體會到健康的可貴。
Who would be so dumb?
誰會這么蠢？
but the steepening angle or me decks increased.
但甲板的傾斜度仍在增加。