戒心的英文：
wariness

Talk about boy-friends always puts her on the defensive.
一谈到男朋友,她总是戒心十足.

These gentlemen had an indefinable mistrust of her good offices
这些先生们对她的好意殷勤抱有难以名状的戒心。

Bigger eased to the trunk and peered behind it cautiously.
别格蹑手蹑脚走到箱子那儿，怀着戒心往箱后张望。

He is wary of strangers.
他提防生人。

To be wary,suspicious,or doubtful.
怀疑的提防的，怀疑的或可疑的

Be wary of strangers who offer you a ride.
提防那些主动让你搭车的陌生人。

Our dog is rather wary of strangers.
我家的狗对陌生人很警惕。

Peter's wide grin was wary and uncertain.
彼得斯的开朗露齿的笑容是谨慎小心，难以捉摸的。