resonate ['rezəneit]
(of a voice, an instrument, etc.) to make a deep, clear sound that continues for a long time:
~ (with sth) (of a place) to be filled with sound; to make a sound continue longer
~ (with sb/sth) to remind sb of sth; to be similar to what sb thinks or believes:
v(使)共鸣;(使)起回声;(使)共振

resonant ['rezənənt]
(formal) (of sound) deep, clear and continuing for a long time
(technical) causing sounds to continue for a long time
(literary) having the power to bring images, feelings, memories, etc. into your mind
adj.共振的；共鸣的；洪亮的

例句
The air was resonant with bells.
空中回荡着钟声。

subsonic [,sʌb'sɔnik] subway
less than the speed of sound; flying at less than the speed of sound
adj. 次音速的；比音速稍慢的
n. 亚音速飞机

supersonic['sju:pə'sɔnik] =ultrasound
faster than the speed of sound
adj. 超音速的；超声波的
n. 超音速；超声波

unison['ju:nisn] universe university
if people do or say sth in unison, they all do it at the same time
if people or organizations are working in unison, they are working together, because they agree with each other
n. 和谐；齐唱；同度；[声] 同音

例句
My feelings are in unison with yours.
我的感情与你的感情是一致的。
They answered in unison.
他们齐声回答。

趣味单词
hoe hole

hoe [həu]
a garden tool with a long handle and a blade, used for breaking up soil and removing WEEDS (= plants growing where they are not wanted)
verb (hoeing, hoed, hoed) to break up soil, remove plants, etc. with a hoe:
vt. 锄，用锄头
vi. 用锄耕地
n. 锄头

例句
The gardener used a hoe to remove weeds.
这园丁用锄头锄草。

绯闻女孩第3季第4集
Well, NYU is my garden, and I plan to rake and hoe and weed it till it looks exactly the way I want.
纽约大学就是我的花园，我准备耕地除草，培育我心中的花园