tern是什么意思

n.三个一组,[鸟]燕鸥

1. The terns were gracefully diving into the water to catch fish.
（燕鸥优雅地俯冲进水中捕鱼。）
2. Beware of the tern, its venom can cause severe damage.
（小心这种燕鸥，它的毒液能造成严重的伤害。）

1. (鸟类)燕；2.（毒蛇）剧毒青蛇。