affect
影响
例句：
Water pollution affects water quality.
水的污染影响水质。
out of breath
上气不接下气
例句：
When he dashed back, he was already out of breath.
当他急速跑回来时，他已经是上气不接下气了。
Don't sweat it.
别紧张。
对话：
A: The car broke down and the repair shop is ten milesaway. What should we do?
B: Don't sweat it. Maybe we can fix it.
A：车子坏了，可修车厂在十英里以外，我们该怎么办呢？
B：别紧张，也许我们能修好它。
