形容詞 intentional:

1. by conscious design or purpose
   同義詞：deliberate, knowing
2. done or made or performed with purpose and intent
   同義詞：designed
3. done by design
   同義詞：willful, wilful

1. The intentional, usually remote-controlled destruction of a space vehicle, rocket, or missile after launching, as for defective performance or reasons of safety.
   毀滅，摧毀因?yàn)榉桨覆煌晟苹驗(yàn)榱税踩脑?，?jīng)常通過(guò)遙控對(duì)已發(fā)射的宇宙飛船、火箭或?qū)棇?shí)施的有意的摧毀
2. His insult was intentional.
   他的侮辱是有意的。

in.ten.tion.al

adj.（形容詞）
Done deliberately; intended:
故意做的；故意的：
例句：
an intentional slight.See Synonyms at voluntary
故意的怠慢參見(jiàn) voluntary

Having to do with intention.
與目的有關(guān)的

【引伸】
inten.tional.ity
inten.tionally
adv.（副詞）