Basically, one set will affect a whole area at once, the direct target spells damage only the enemy target, while the shockwave will have a rolling effect... going outwards to the enemies.

基本上来说，第一种是使整个范围内的攻击，直接目标攻击咒语仅使目标敌人受到打击，冲击波攻击会取到一种旋转效果…并冲荡出去攻击敌人。

youdao

Hertz has followed Zipcar's lead by rolling out a programme called Connect by Hertz, which allows people to hire cars for relatively short spells.

ECONOMIST: In hot pursuit of the casual consumer