Ammoniometer
[機] 氨量計
??? 情景例句
Carnegie Hall, Lincoln Center.
卡奈基音樂廳， 林肯中心。
It's really a bargain.
租金很便宜。
The most economical age to capture an elephant for training is between fifteen and twenty years,
捕捉15至20歲之間年齡的大象進行馴練最為經(jīng)濟。