| 单词 | weevil |
| 释义 | weevil noun[C] uk/ˈwiː.vəl/us/ˈwiː.vəl/any ofvariousbeetlesthatdestroycropssuch asgrainsandcotton 象鼻虫 arlindo71/E+/GettyImages Insect names
Examplesofweevilweevil Unexpectedly, parasitized weevils had the lowest mortality rates (prior to larval parasitoid emergence). From theCambridge English Corpus It was also susceptible toweevilattack and had small grains. From theCambridge English Corpus These weevils were all individually labelled to ensure that only marked insects were taken into account. From theCambridge English Corpus Reasons for legume seed loss included eating the seed, livestock or birds eating the crop, beetles, weevils or other pests destroying the seeds. From theCambridge English Corpus However, larval mortality was very low, and teratocytes were present in almost all parasitized weevils. From theCambridge English Corpus When weevils were dissected at the end of the bioassay, most were reproductively immature with relatively small developing eggs. From theCambridge English Corpus Totalweevilcounts were highest in 'no exclusion' plots and lowest in 'total exclusion' and 'early + mid' plots. From theCambridge English Corpus These pre-reproductive weevils feed for a period before hibernating in the ground. From theCambridge English Corpus Only a single first instar larvae was found perweevillarva. From theCambridge English Corpus Analyses of totalweevilcounts showed significant differences among treatments (see below). From theCambridge English Corpus In contrast, in the outdoor treatments the weevils fed mainly (68-79%) on the exposed surfaces of the pine pieces. From theCambridge English Corpus Corresponding numbers of weevils were removed from the control cages and the ryegrass replaced as necessary. From theCambridge English Corpus The weevils were moved to new containers with fresh pine pieces every seventh day. From theCambridge English Corpus Estimated mean values for weevils on logs, adjusted pro rata are shown for comparison but not included in the analysis. From theCambridge English Corpus After 18-21 days, the weevils were extracted from the cages using an adapted vacuum-cleaner and counted. From theCambridge English Corpus 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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