frond|fronds

棕榈树的大叶子在微风中轻轻摇曳。

The palm tree's large ___fronds sway gently in the breeze.

蕨类植物的叶片在阳光下显得格外翠绿。

The fern's ___fronds looked especially green in the sunlight.

热带植物的宽大叶片在微风中轻轻摇曳。

The tropical plant's large ___fronds gently swayed in the breeze.