撞击：意外地用力撞击或碰撞到某物。
collide violently with an obstacle
同义词： run into / bump into / jar against / butt against
Knock Against(碰撞), 此释义来源于网络辞典。
... knock back （摇把）反击，（活塞）逆行，（曲轴）反转；反座；回击，击退；使...大吃一惊 knock against 撞击，与…冲突；偶然遇见 knock sensor 爆振传感器；进气流量传感器 ...
He advanced with precaution, taking care not to knock against the furniture.
他朝前走，谨慎小心，唯恐撞了家具。
In the process of transportation, to prevent knock against and violent vibration, to prevent rain water.
运输过程中，要防止磕碰和剧烈震动，要防止雨淋水浸。
In the process of handling, the workers will surely items carefully knock against, are at the disposal of consumers.
在搬运的过程中，工人肯定会小心物品的磕碰，随时听候消费者的调遣。
The knock against tiger parenting style is that it does not foster emotional and social development.
The big knock against their former coach was a failure to land an NCAA tournament berth.
Tight-head Wilson picked up a shoulder knock against Wales, limiting his participation in training this week.