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- Double agents live in a perpetual state of fear. 两面派永远过着提心吊胆的生活。
- She's tired of their perpetual chatter. 她对他们没完没了的闲谈感到厌倦。
- He was irritated by their perpetual complaints. 他们一再发牢骚把他惹火了。
- He was perpetual president of the country. 他是该国的终身总统。
- I'm tired of your perpetual nagging. 我对你无休止的唠叨厌烦了。
- They hoped to live in perpetual happiness. 他们希望生活在永久幸福之中。
- That is a hybrid perpetual rose. 那是一株杂种的四季开花的蔷薇。
- Random mating within a breeding population. 自由交配在一个育种群中自由交配
- A contented mind is a perpetual feast. [谚]知足长乐。
- The widow mourned for her dead mate. 那寡妇为她已故的丈夫服丧。
- Many animals mate in the spring. 许多动物在春天交配。
- The first mate was studying to become a master. 大副正在学习准备当船长。
- Pandas rarely mate (with each other) in captivity. 猫熊在豢养环境中很少(彼此)交配。
- The monkey scratched about in its mate's fur for fleas. 那只猴子在另一只猴子身上找跳蚤。
- The blackbird sat on the nest waiting for the return of her mate. 黑鹂在巢中等候其雄鸟归来。
- Mating blackbirds will defend their territory against intruders. 黑鹂交配时不容许地盘受到外来的滋扰。
- perpetual mating 长杀
- The male hunts for food while his mate guards the nest. 雌性动物守巢时，雄性动物猎食。
- A criminal must be in perpetual dread of exposure. 罪犯总是提心吊胆,害怕暴露。
- At thirty, he signed on as first mate with a cargo ship. 他30岁时受雇于一艘货船当了大副。
