这棵高大的梧桐树的树皮正在剥落。

The bark of the tall ___sycamore tree is peeling off.

这张桌子的表面是用优质美国梧桐木制成的。

The tabletop is made of high-quality American ___sycamore.

公园里的那棵悬铃木在春天会开出淡绿色的花朵。

The ___sycamore in the park produces pale green flowers in spring.