1、course

(尤指船或飛機的)航向，航線，路線

Aircraft can avoid each other by going up and down, as well as by altering course to left or right.

飛機可以通過上下升降和左右移動改變航線來避免相撞。

The tug was seaward of the Hakai Passage on a course that diverged from the Calvert Island coastline.

托船駛離卡爾弗特島海岸朝哈凱航道駛去。

行為方式;處理方式

My best course of action was to help Gill by being loyal, loving and endlessly sympathetic.

我能給吉爾的最大幫助就是對他忠誠、關愛他并且永遠滿懷同情之心。

He must fall on his sword. That's the only course left open to him.

他必須面對失敗，他唯有這一條路走。

進程;發展的方向

a series of decisive naval battles which altered the course of history.

改變歷史進程的一系列決定性的海戰

In the natural course of events cows would wish to be milked more than twice a day.

按照事情發展的自然規律，母牛每天應該擠奶兩次以上。

2、vulnerable

脆弱的;易受傷害的

Old people are particularly vulnerable members of our society.

老年人是社會中尤為明顯的弱勢群體。

易感染（某種疾病）的；易患病的

People with high blood pressure are especially vulnerable to diabetes.

有高血壓的人尤其易患糖尿病。

Plants that are growing vigorously are less likely to be vulnerable to disease.

生命力強的植物不容易得病。

易受傷害的;易受影響的

Their tanks would be vulnerable to attack from the air.

他們的坦克易受到空襲。

a table showing which cars are most vulnerable to theft.

易被盜車輛一覽表