People feeling nervous or unsure of themselves will unconsciously take a guarded stance.

心中不安或不自信的人会无意识地采用防御式的站姿。

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If your date avoids taking your hand or putting his arm around you he may be uncomfortable or unsure.

简单一例，如果你约会的男朋友回避跟你牵手或者不愿意搂你，那么他要么是对你不感冒，要么是对你俩的关系不确定。

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If you are unsure of how to use any apparatus or how to operate, ask your teacher for help.

如果你不确定如何使用仪器或操作，请向老师寻求帮助。

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It is impossible to get others excited if you are burnt-out or unsure.

FORBES: Hey Leaders: We're Not Inspired! Try This Approach Instead.

Seventeen percent of the respondents either declined or were unsure on the question, which Merdeka put forward for the first time to voters.

WSJ: Malaysians Turn Out in Record Numbers in Tight, Historic Election

But if France is too emotional, too logical or too unsure of itself for humour, it can at least fall back on farce as a way of releasing the emotions.

ECONOMIST: The French have jokes, but do they have a sense of humour?