High frequency roll-off
[电] 高频衰减
🧩 词语组成解析
high
[haɪ]
adj. 高的;高尚的，崇高的;高音调的;高级的，高等的;
adv. （程度等）高地;高价地;奢侈地;
n. 高处，高位;[气象学]高气压;高压地带;高水平;
frequency
['frikwənsi]
n. 频繁性;[数][物]频率，次数;频率分布;
fr + equ =equal,even,表示“相等，平均” + enc + y [形容词后缀] → n.屡次；次数；频率
roll
[rəul]
vt. 辗;使（眼球等）左右转动;（使）原地转圈;滚动;
vi. 左右摇晃;翻滚;开始移动，启动;
n. 名册;滚翻;
off
[ɔ:f, ɔf]
prep. 从…落下;离开;从…去掉;下班;
adv. 离开;距，离;被取消;下班;
adj. 不新鲜的;不能接受;不礼貌;
n. 起跑;
v. 杀死;
🗣️ 情景例句
Who was it?
谁来的电话
The audience laughs.
观众在大笑。
In 1858 an area of poor housing, factories and farm buildings was torn down and Central Park was created, reaching from 59th Street to 110th Street and across three avenues.
1858年拆除了一大片破旧的房屋、工厂和农舍，建起了中央公园，这个公园从59街延伸到110街，跨越三条大马路。