The birds cannot afford to relax their vigilance against predators.鸟儿不敢放松对捕食者的警戒。Constant vigilance is necessary in order to avoid accidents.为了避免意外事故,必须经常保持警惕.Never relax your vigilance while you live in peace.你们要居安思危.We...
Drugs are a problem that requires constant vigilance.需要对毒品问题长期保持警惕。Never relax your vigilance while you live in peace.你们要居安思危.Constant vigilance is necessary in order to avoid accidents.为了避免意外事故,必须经常保持警惕....
这些天我有点焦躁。我看是荷尔蒙在作怪。I get a bit uptight these days. Hormones, I suppose.雌激素是一种雌性荷尔蒙。Oestrogen is a female sex hormone.这种荷尔蒙与体內其他荷尔蒙紧密地相互作用.This hormone interacts closely with other hormones in the body....
The demonstrations erupted into violence.示威游行爆发成暴力行为。...demonstrations of new products.新产品的演示There were demonstrations this weekend in cities throughout North America, Asia and Europe.本周末在北美、亚洲和欧洲的多个城市举行了示威游行。...demonstr...