sapling|saplings

这棵幼苗正在茁壮成长。

This ___sapling is growing strong.

我们在后院种了几棵小树苗，希望它们能长成大树。

We planted several ___saplings in the backyard, hoping they will grow into big trees.

这株幼苗在阳光下茁壮成长。

The ___sapling thrives in the sunshine.