A super swarm of this scale may only appear once in a decade. 如此大规模的超级蝗群也许十年才出现一次
they appear totally devoid of all vegetation. 看似寸草不生
But these tadpoles are not as helpless as they might appear. 但这些小蝌蚪并不像表面看起来那样无助
If she doesn't appear soon, it will be too late for them to breed successfully. 如果雌性信天翁还不出现 他们将错过顺利繁衍后代的机会
Below five hundred meters, new, mysterious animals appear. 在500米深处,新的神秘动物出现了
and for short periods, they appear in astounding numbers. 在很短的时间内,它们就能达到惊人的数量.
Salps appear in the plankton soup. 樽海鞘出现在浮游生物汤中
the first to appear are the spider monkeys. 第一个映入眼帘的是蜘蛛猴
All sorts of creatures now appear 此时各种各样的动物都开始现身