重點講解：
1. be susceptible to 易受(傷)的；
Some of these plants are more susceptible to frost damage than others.
這些植物中有一些較其他的易受霜凍危害DGC&JFItF~G[!.S1qb_。
2. be exposed to 使暴露于（險境）；使遭受（危險或不快）；
They were exposed to radioactive fallout during nuclear weapons tests.
在核武器試驗中他們暴露在放射性塵埃之下BL|+]8Az4llG@Xssj[WZ。
3. be resistant to 有抵抗力的；不受…損害的；
Cotton is more resistant to being squashed and polyester is more resilient.
棉布更抗壓，而滌綸更有彈性iPyhozIzrD]+A%^Il。
4. ball up （使）成球狀（或團塊）；
She balled the handkerchief up and threw it at his feet.
她把手絹揉成一團，丟在了他的腳邊LHF9pjASCruh。