重点讲解：
1. give birth 生（孩子）；分娩；生育；
She died shortly after giving birth.
她生下孩子后不久便死了_W+d+Rh;fT3yVnMUg*。
2. be susceptible to 易受(伤)的；易患(病)的；体质过敏的；
Some of these plants are more susceptible to frost damage than others.
这些植物中有一些较其他的易受霜冻危害1[5Y^z,0#UeIM[C~%。
3. be slated for 预定；计划；安排；
The houses were first slated for demolition five years ago.
这些房子在五年前就确定要拆除了,@pR%Yt9q5o。
4. subsist on 勉强糊口；勉强度日；
Old people often subsist on very small incomes.
老人往往靠十分微薄的收入艰难度日Zp5#5[i3.3X。