Blb mask
[医] BLB面具(飞行员用的供氧面具)
🧩 词语组成解析
mask
[mæsk]
n. 面具;假面具;用作掩饰的事物;护肤膜;
vt. 掩饰;戴面具;用面具遮住，掩盖，掩饰;
vi. 戴面具;隐瞒，掩饰;
🗣️ 情景例句
if it's all right with your dad.
假如你爸爸答应的话。
What''s the cause of the delay?
什么原因延误？
Some of them were as big as marbles.
有的钻石像玻璃球那么大。