叶背毛为较稠密的长柄树状毛、长柄叉状毛、长柄单枝毛和长柄、腺细胞大的粘性腺毛的泡桐为高度抗病。
Leaves with dense long stalk dendroid trichome, long stalk forked trachoma and long stalk trichome with big glandular cells were resistance to the disease.
长柄草耙和餐叉的主意就是来自叉状的树枝；飞机来自滑翔的鸟类。
The idea for the pitchfork and table fork came from forked sticks; the airplane from gliding birds.
长柄草耙和餐叉的主意就是来自叉状的树枝；
The idea for the pitchfork and table fork came from forked sticks;
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