苦夏的英文：
loss of appetite and weight in summer

loss是什么意思：
n. 损耗，亏损；丢失；去世；失败；浪费；降低；减少

Depreciation, loss of market, loss of use and other consequential losses of any description.
贬值、丧失市场或使用价值等其他后果损失。

The school was lamed by losses of staff.
学校因教职人员流失而开不了课。

loss and damage or delay of goods.
贷物的损失、损坏或交付延误。

appetite是什么意思：
n. 肉体的欲望，食欲；自然的欲望

I have a famous appetite.
我胃口极好。

A good appetite is a good sauce
饥不择食

Appetite comes with eating
食欲越吃越旺

weight是什么意思：
n. 重量；砝码，秤砣；重物；负担；重要性；严重性
v. 使…变重；偏袒

The weight put on this thread was a weight of two pounds.
放在这条绳子上的重物为两磅。

We need a hanging weight.
我们需要一个悬挂着的重物。

Pull one's weight
竭尽全力