and, with it, half the indri families that once lived there. 而那里曾栖息着半数的大狐猴家族
to bask in the sunshine once again. 再一次沐浴在阳光之中
But once on level ground, they're vulnerable. 但回到平地上 他们就很容易遭到攻击
Once a year, they must all return to the sea to breed, 每年它们都会回到海洋中进行繁殖
Female dragons come into season only once a year. 雌性巨蜥一年发一次情
She's not eaten once, in two months. 它已经有两个月没有吃东西了
Because it devotes so little energy to swimming, it only needs a meal once a month. 因为它游泳耗费的能量极少, 所以只需每个月吃1顿饭