雷 léi

Origin:

甲骨文“雷”字中间的曲线是打雷时伴随着的闪电,用圆形表示雷的响声,后人又在上面加上“雨”字表示雷多在雨天出现。
On oracle bone inscriptions, the character “雷” has a curve in the middle representing lightning, while the exterior circle signifies thunder. Later, the character “雨” (rain) was added, as thunder often appears on rainy days.

Meaning:
thunder; mine; surname Lei
Words:

雷声(léishēng): sound of thunder
雷雨(léiyǔ): thunderstorm
地雷(dìléi): landmine
雷人(léirén): to shock (figuratively)
雷厉风行(léi lì fēng xíng):to carry out sth. resolutely

Sentences:

1、Xiànzài yǒu hěnduō míngxīng de dǎban dōu hěn léi rén,bǐrú Lady Gaga.
现在有很多明星的打扮都很雷人,比如Lady Gaga.
Nowadays, many superstars dress shockingly, such as Lady Gaga.

2、Dàjiā shuō gàn jiù gàn,léi lì fēng xíng,liǎng tiān jiù zāizhòng le sānqiān kē shùmiáo.
大家说干就干,雷厉风行,两天就栽种了三千棵树苗。
Working resolutely, they planted three thousand trees in two days.

原文链接