音标
英语音标：[ˈsɜːt(ə)nlɪ; -tɪn-]
美语音标：[ˈsɝtnli]
翻译
adv.当然；一定
例句
Certainly, the early years are crucial to a child's development.
毫无疑问，幼年对儿童的成长至关重要。
The team called 'The No-Hopers' certainly lived up to its name.
叫做“无望者”的球队果真名副其实。
I certainly don't have anything to prove ─ my record speaks for itself.
我当然不用证明什么——我的纪录就可说明一切。
