Echosounder
[医]超声探测器
🗣️ 情景例句
Put your cards on the table.
把牌都摊到桌面上。
Do now waste them, but use them while they are fresh.
不要浪费了这些，要趁未落伍时善加利用。
Thirteen is not as good as one, but it's better than nothing.
“13下是不如1下好，但总比1下也不敲强。