【句子】
The wallflower is so called because its weak stems often grow on walls and along stony cliffs for support.
墙花之所以叫墙花，是因为其脆弱的枝干经常要靠墙壁或顺石崖生长，以便有所依附。
【解析】
1.call
1)call sb 可表示“叫醒某人”、“呼唤某人”、 “打电话给某人”等
Will you go and call Jack?
你去叫一下杰克好吗?
2)比较以下正误句型(误句多为受汉语习惯影响)：
这个东西用英语怎么说?
正：What do you call this in English?
正：How do you say this in English?
误：How do you call this in English?
