重点讲解：
1. at least 至少，起码；
例句：She may be slow but at least she's reliable.
她迟钝是迟钝，但无论如何她很可靠@XYC&*vT]3n[N!。
2. even though 即使；尽管；纵然；
例句：He is still under his mother's thumb, even though he is nearly 30.
他虽然快30岁了，但仍然受着母亲的管束2b^H2z_-kpfB1。
3. compared to 与…相比；和…比起来；
例句：Compared to the other powers, this is the least effective.
相比其他能力，这个能力是最没效能的c17EczCic.M)_v;yg。
4. be used to doing sth. 习惯于；
例句：The old man and his wife have been used to living a simple life.
这对老夫妇已经过惯了简朴的生活SslPIhdiMP9nviI+(。