catch
vt. 趕上；抓住；感染；了解
vi. 趕上；抓住
n. 捕捉；捕獲物；窗鉤
例句：
I had to run like mad to catch the bus.
為了趕上公共汽車，我不得不拼命跑。
I stopped and waited for her to catch up.
我停下來(lái)等她趕上。