xū / jīng / méi / yǒu / yá / chǐ / zhǔ / yào / kào / jīng / xū / guò / lǜ / hǎi / shuǐ / zhōng / de / shí / wù须鲸没有牙齿,主要靠鲸须过滤海水中的食物。Baleen whales have no teeth and mainly filter food from seawater with their baleen.