harden

🧩 词形变化

💬 双语例句

1. The perpetrators are not hardened criminals; many have no previous criminal record. They are pathetic, deranged, and often have struggled with mental instability for much of their lives.

   凶犯并不是顽固不化的罪犯；许多人都没有犯罪记录。 他们是可怜的精神错乱者，常常在精神异常中苦苦挣扎。 他们需要帮助 — — 而社会需要让枪支远离他们。

2. Once out of the ground, the cicadas molt and wait for their bodies to dry and harden, then they fly to the tops of trees where they feed and look for a mate, which they do by making a loud buzz.

   蝉破土而出后，会蜕皮，等待身体干燥变硬，然后飞到树顶觅食和寻找配偶，牠们通过发出响亮的蝉鸣来寻找配偶。