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For the first time, this study conducted a series of field sampling in multiple locations over several years and demonstrated that the B and Q biotypes first invade areas with high frequency of transport through human movement of plant materials, and then rapidly spread into surrounding areas and displace indigenous genotypes, and in parallel with displacement significant changes in sex ratio occurred in the mixed populations. Crossing experiments demonstrated that in the B. tabaci species complex there are many genetic groups that are completely or nearly completely isolated in reproduction. Apart from behavioural mechanisms, difference in host plant suitability and insecticide susceptibility between whitefly biotypes may also play important roles in the displacement of indigenous whiteflies by alien whiteflies in Zhejiang.

本研究首次以一个地理区域内广泛系统的野外调查数据证实，B型和Q型烟粉虱首先通过花卉苗木调运入侵交通较为发达的地区，然后迅速向周边扩张并取代土著烟粉虱，同时入侵取代过程伴随着混合种群中性比的变化；杂交试验证明烟粉虱复合种内存在多个生殖上隔离或基本隔离的遗传群；B型烟粉虱在浙江省内迅速取代土著烟粉虱，除行为机制外，生物型之间寄主适应性和药剂敏感性等方面的差异也可能在此过程中起着重要作用。

Department of UV light is directly under the lampdimming relative parallel to the edge of the half-exposure in the outlets of water, and for the surrounding small mesh point of this phenomenon is more serious.

处在UV灯管侧上方的平线不绝对交错，网不面边际半曝平的火平较不沉，而对于边际的小网不面这种本体则较为惨重。

One can bless the waterways surrounding oneself along with the land and begin to accomplish a parallel shift wherever one lives.

你能祝福你周围的水域和大地，并开始在你所居住之处实现类似的变化。

The fusion of the vertebrae paresthesia is a complication due to the inflammation of the tissue surrounding nerves.

融合的椎骨感觉是一种并发症，由於炎症的周围神经。

Enzyme can cause burning, paresthesia, and dermatitis to surrounding skin.

正确分布软膏可确保效果，酶可致周围皮肤出现烧灼感、感觉异常和皮炎等。

The lake and surrounding parkland are popular tourist attractions.

该湖及其周围的公园是极佳的旅游胜地。

Despite the cultural revival, the bitter publicity surrounding Parnell's affair, and later his death, dashed all hopes of Irish independence and unity.

尽管文化复兴，痛苦的宣传周围帕内尔的事，后来他去世后，所有希望破灭的爱尔兰独立和统一。

The observations reveal warm (320 K) dust in a structure 2.1 parsec thick and 3.4 parsec in diameter, surrounding a smaller hot structure.

观测显示，在NGC 1068中心的尘埃圆环面原来是一个比较热的（320 K）的致密结构，直径约几个光年，它阻断了我们的视线，使我们无法看到该星系最里面的活动区域。

The detailed algorithm on analyzing cracks exploration inside blocks is: enriched approximations which describe singular crack tips fields and discontinuous crack faces are employed under the Partition of Unity theory; the enriched nodes surrounding crack tips or faces are respectively mapped with corresponding enriched degrees of freedom, and the solution of all these degrees of freedom is uniformly proceeded by the implicit iteration algorithm of DDA, then fracture and breakage of DDA blocks can be analyzed. The numeric examples show this algorithm is rational and efficient.

为此建立的无网格法裂纹扩展分析算法，采用满足单位分解条件的特殊增强型函数表达裂纹周围应力场的非连续、奇异特性，将对应的扩展自由度动态映射到裂纹周围的节点上，统一按DDA法隐式迭代方式求解，实现块体裂纹扩展和强度分析，相关算例结果显示该算法是合理有效的。

When you go to a dance party, there are a wall of guys surrounding the dance floor trying to look cool.

在舞会上，人家跳舞，你和你的朋友通常不跳舞却总是喜欢围着看热闹。

We were cousins—his grandfather was King of Scots,and his great-grandfather was Henry VII of England.

我们是堂姐弟——他的祖父曾是苏格兰国王，他的曾祖父是英格兰的亨利二世。

I do want to help you, but I am in a quandary now!

我是想帮你，但是我现在左右为难啊！