Be disappointed in...
对...感到失望
🧩 词语组成解析
be
[bi]
v. 是;有，存在;做，成为;发生;
aux. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质;
disappointed
[[ˌdisə'pɔintid]]
a. 失望的
🗣️ 情景例句
I suppose so.
我想是这样吧。
I'm twenty-one years old.
我21岁。
The currents of air that the walls of the ship direct upwards, as well as in the line of its course, are enough to give the great bird with its immense wings sufficient sustenance and progress.
沿船体的上升的气流和沿航线向前的气流给这种巨翼大鸟以足够的浮力和推力。