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僅次於蚊子的疾病傳播者
官方建議：結合視頻一起學習，知識點會記得更牢固！
（溫馨提示：視頻為雙語版本，先看視頻學習一遍，再回來看文本進行深度學習，效果更顯著哦）
視頻文本：
The hills are alive with silent, waiting ticks.
在丘陵地帶，一群蜱蟲蓄勢待發
Their bites can transmit bacteria that cause Lyme disease,
它們的叮咬會傳播病菌 使人染上萊姆病
and other things that can make us very sick.
或其它疾病
Protected by these palps is a menacing mouth
在這對鰲肢下
covered in hooks
隱藏著佈滿鉤子的口器
First she has to find a host.
首先她得尋找宿主
She can sense animals like us by the carbon dioxide we give off
通過人類或動物呼出的二氧化碳找到宿主
She reaches out with her front legs.
她伸出了前肢
Scientists call this questing.
學名須肢
It will use that claw to latch onto something.
她會用鉗子勾住其它東西
.. like your sleeve.
比如你的袖子
Now you see her
現在你還能看見她
now you don't.
轉眼就不見了
Once aboard, she searches out a nice spot to bite into for blood.
成功著陸後她開始尋找吸食血液的最佳入口
She lives three years,
她的壽命只有三年
but in that time she only eats three meals.
一生也只用飽餐三頓
A tick needs enough blood to grow from Larva to nymph,
蜱蟲通過吸食足量的血 從幼蟲長成若蟲
nymph to adult,
再長成成蟲
and then for females to lay their eggs.
接著雌成蟲開始產卵
and then for females to lay their eggs.
接著雌成蟲開始產卵
Gross.
真噁心
Let's check out a nymph, a young tick.
看 一隻年輕的若蟲
It's tiny, smaller than a freckle.
它比一粒雀斑還小
To grow into an adult,
要長成成蟲
It needs one blood meal. a big one.
它可要好好飽餐一頓
The front of its body is all mouth.
蜱的前部稱為顎體
In digs into us using two sets of hooks.
它用兩排鉤子切開皮膚
The hooks wriggle into the skin.
扭動著深入皮下
They pull our flesh out of the way
推開人肉後
and push in this mouthpart the hypostome.
接著推進唇瓣
Those hooks anchor the tick to us for the long haul, like mini -harpoons.
因為這些鉤子蜱蟲就像迷你魚叉一樣一直鉤著你的皮膚
While the speedy mosquito digs in,
蚊子卻會快速地刺進皮膚
sucks our blood and splits, all within seconds,
吸食血液 然後離開 只需幾秒
A tick nymph stays on for days.
蜱的若蟲卻可以待上幾天
Three days, if we don't find it before then
在不被發現的情況下整整三天
Compounds in their saliya help blood pool under the surface of our skin.
它們唾液裡的成分能使血液匯聚
The nymph sips it through its mouthparts,
用唇瓣吸食血液
like drinking from a straw.
就像用吸管喝飲料
When a tick is full
當蜱蟲吸飽後
and I mean completely fill
非常非常飽後
it falls off wherever it may be.
它會直接掉落
Maybe onto your bed.
說不定就掉到床上
That's if you don't nab it first.
前提是你沒有逮住它
You might have heard that you should twist or burn the tick.
有人建議強行摘除或把它燒死
Not true.
你可別信
Grab the tick close to your skin and just pull straight out.
用鑷子鉗住蜱蟲筆直拔出
That's how you win the fight against those tenacious hooks.
這樣才能戰勝這些牢固的鉤子
好啦，今天的英語教學就到這裡啦。
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