a plum tree的用法和样例：
- There is a plum tree at the bottom of the garden.
- Don't fix your hat under a plum tree.
- Below was a plum tree grove with branches in full flower.
- It was a plum tree all scarlet with blossom set off beautifully by the sunset.
- Do not put on your shoes in a melon patch; do not adjust your cap under a plum tree.
a plum tree的相关资料：