jù zuǐ niǎo / de / dà zuǐ / kàn qǐ lái / bèn zhòng / qí shí / fēi cháng / qīng qiǎo巨嘴鸟的大嘴看起来笨重,其实非常轻巧。The toucan's big beak looks heavy, but it is actually very light.