例句與用法

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1. There is less danger from insect and disease contamination .
   病蟲(chóng)侵染的危險(xiǎn)較小。
2. Airborne spores infect freshly exposed wood .
   存在于空氣中的孢子，侵染新長(zhǎng)出來(lái)的林木。
3. There were as many as 54 infection courts on an individual tree .
   在個(gè)別樹(shù)上有多達(dá)54個(gè)侵染點(diǎn)。
4. An infection thread is formed by the cytoplasm of the host cell .
   侵染線是由寄主細(xì)胞的細(xì)胞質(zhì)形成的。
5. The infection-thread enters and branches in cells of the root cortex .
   侵染線進(jìn)入根的皮層細(xì)胞并進(jìn)行分枝。