重点讲解：
1. find out (尤指特意通过努力)发现，找出，查明；
With geological maps, books and atlases you can find out all the proven sites of precious minerals.
有了地质图、书籍和地图册，你便可以找到所有已探明的珍贵矿藏的位置fcE^hZ87u,r。
2. to date 迄今；到目前为止；
To date there is no evidence to support this theory.
到目前为止，还没有证据支持这种理论w@bM8@bQ=uw。
3. in the face of 面对；在…面前；
Little companies are known for their pluck and perseverance, even in the face of a recession.
小公司的勇气和坚毅是出了名的，即使面对经济衰退也是如此f.qe5^oj,#5。
4. be able to do sth. 可以…的，能够…的；
It must be better to be able to offer them love and security.
要是能给予他们关爱和安全感肯定会更好Ibl+aN8Gwj0D。