| 词汇 | acacia |
| 释义 | acacia noun[ C or U ] uk /əˈkeɪ.ʃə/ us /əˈkeɪ.ʃə/ a tree from warm parts of the world that has small leaves and yellow or white flowers金合欢树 Corey Ford/Stocktrek Images/GettyImages Deciduous trees acer ailanthus alder almond American elm ginkgo hawthorn honey locust hornbeam horse chestnut quaking aspen red maple red oak rowan rubber tree wayfaring tree weeping willow white ash white birch white oak He asked her to sit beside him beneath the acacia. Outside, only the higher branches of the acacias were touched by the setting sun. The little pond of which I have spoken at the head of the pass, had near it a beautiful clump of acacias of a species entirely new to us. Then I caught a glimpse of gold from the laburnums, of purple from the lilacs, of white from the sweet acacia trees. They are principally bounded with various trees of the pine tribe, intermingled with laurel and acacia. Examples of acaciaacacia Conversely, when graze is limited there will be higher utilization of acacias by elephants but also fires of low intensity. There were more understorey beetles in the acacia plantation, which has more ground cover, compared with the oil palm plantation (see figs 4 and 8b). These observations support the hypothesis that the anti-herbivore defences of acacia are primarily directed against large mammalian herbivores, rendering the foliage highly palatable to arthropods. As environmental conditions improve, species abundance patterns grade into those of the log series distribution which appear to be portrayed by the acacia plantation curve. She also buys acacia pods to give them. Other studies have questioned the role of fire as a general explanation for the structure of acacia populations. They suggested that ageing of acacias will thus give information not on their age but on the period since release. We found 58.7% of the birds in acacias. The greater preponderance of small arthropods in acacias versus oaks was probably related to the small leaflet size of acacias. The tree totals exclude all trees but oaks and acacias. In the latter group there were no significant differences between acacia and oak. Elephants thrive on acacia trees, but the latter can only develop in the absence of the former. We conclude with some suggestions of a framework for interpreting acacia demography. More experiments need to be repeated for acacia seedlings. A high sample was 8 m for oak and 4 m f or acacia. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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