看起来严肃
Used to describe appearing serious and not cheerful.
用于描述外表看起来严肃且不愉快。
表情严肃
Used to describe a state of being serious and not cheerful.
用于描述严肃且不愉快的状态。
似乎很严肃
Used to describe seeming serious and not cheerful.
用于描述似乎很严肃且不愉快。
听起来严肃
Used when someone's voice indicates they are serious.
用于描述某人的声音听起来很严肃。
保持严肃
Used to describe continuing in a state of being serious.
用于描述持续处于严肃的状态。
变得严肃
Used to describe a change into a state of being serious.
用于描述转变为严肃的状态。
逐渐变得严肃
Used to describe a gradual change into a state of being serious.
用于描述逐渐转变为严肃的状态。