I'm inviting Jane to be my partner for the May ball.

我要请简做我五月舞会（剑桥传统）的舞伴。

Just as some people will extend their fingertips in stressful situations, others may ball up their fists or tighten their grip.

就像有些人在压力大的情况下会伸出指尖一样，其他人可能会握紧拳头或握紧拳头。