委实的英文：
actually; really

参考例句：

She was really not of the contentious fighting sort.
她委实不是好吵好闹的人。

The reappearance of this ghost from the past - and at such a moment as this -seemed so cruel
这一“过去”的再现，而且恰在此时，委实太残酷！

With one thing after another, the poor chap has too much to contend with
一桩桩一件件的事接踵而来，那可怜的家伙委实够受的了。

actually是什么意思：
adv. 实际地，事实上，真的；竟然

Actually, this was not a truce.
这其实不算是一种休战协定。

You must face the actual conditions.
你必须面对现实情况。

Entropy is actually a measure of disorder.
“熵”是一个针对混乱程度的度量数值。

Further, proof of actual harm is not necessary.
甚至连实际危害的证据都没有必要出具。

The maze is actually two interlocking spirals.
这个迷宫实际上是两个连锁的螺旋体。

really是什么意思：
adv. 实际上，事实上；完全地；真的吗

You really are a homo.
你真的是个同性恋。

You are really uncultivated.
你真的很没教养。

You really are a stiff.
你真的是一个笨蛋。

He is really a smart.
他真是个耍聪明的人。

Yes, it is really exciting to waterski.
是的，滑水非常刺激。