Bd ft
abbr. board foot 板英尺（木材体积单位）
🧩 词语组成解析
[计] 空白显示, 框图, 布尔差分
n. 英尺
🗣️ 情景例句
Why are you crying?
你为什么哭？
A crown is no cure for the headache.
王冠难治头痛。
Almost any day a young porpoise may be seen trying to turn a 300-pound sea turtle over by sticking his snout under the edge of his shell and pushing up for dear life.
几乎每天都可以看到一只小海豚把鼻子顶入一只300磅重的海龟的硬壳下面，拼命地把它翻过来。