Reformatories
(reformatory 的复数) n. 教养院\\na. 改革的, 革新的
🗣️ 情景例句
I think you can make a difference, Ellen.
我觉得你可以发挥影响力 ，Ellen。
To paint
油漆
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
测出回声间隔的时间，便可算出该处海洋的深度。