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单例模式
单例模式有懒汉和饿汉两种形式： 懒汉 不占用内存，但是不是线程安全的，所以要加锁保证线程安全。 饿汉 开始就创建好了，所以会一直占用内存，但是它是线程安全的。 各有各的好，考虑具体需求使用 class Lazy { //懒汉式，先不创建 private static Lazy instance = nu英语不定式短语合集
compare （一）compare...with...：将...与...相比较 【例句】First, his feet are painful, however compare with a hunger to say that nothing. （二）compare...to...：将...与...相比较；将...比作... 【例句】The accident Egyptians compared the rising of the sun to the beginning of2022-2023年英语周报八年级第36期答案汇总
进入查看： 2022-2023年英语周报八年级第36期答案汇总 Emotional eating is when people use food as a way to deal with feelings instead of satisfying hunger.Have you ever finished a whole bag of chips out of boredom or downed cookie after cookie while preparing