seed leaf

同根派生

Cotyledon (seed leaf) the first leaf of the embryo of seed plants, which is usually simpler in structure than later-formed leaves.
子叶：种子植物胚胎的第一片叶，在结构上通常比后来形成的叶简单。
A flowering plant with two embryonic seed leaves or cotyledons that usually appear at germination.
双子叶植物具有两片胚籽的或通常在萌芽上有双子叶的花卉植物
With the wind, these white seeds leave the easeful life, fly to the sky.
伴着轻风拂过，这些白色的种子终于离开了昔日的安乐，飞向了无边的天空；
The olive leaf is a badge of peace.
橄榄叶是和平的象征。
The chef sprinkle poppy seed on the cake.
厨师往蛋糕上撒罂粟籽。